Relevant bibliographies by topics / Nanophosphors

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Nanophosphors'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 May 2024

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Journal articles on the topic "Nanophosphors"

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Das, Antika, Subhajit Saha, Karamjyoti Panigrahi, Uttam Kumar Ghorai, and Kalyan Kumar Chattopadhyay. "Enhanced Photoluminescence Properties of Low-Dimensional Eu3+-Activated Y4Al2O9 Phosphor Compared to Bulk for Solid-State Lighting Applications and Latent Fingerprint Detection-Based Forensic Applications." Microscopy and Microanalysis 25, no. 6 (April 26, 2019): 1422–30. http://dx.doi.org/10.1017/s143192761900028x.

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AbstractIn recent years, nanoscale phosphors have become vital in optoelectronic applications and to understand the improved performance of nanophosphors over bulk material, detailed investigation is essential. Herein, trivalent europium-activated Y4Al2O9 phosphors were developed by solid-state reaction and solvothermal reaction methods and their performance as a function of their dimension was studied for various applications. Under 394 nm optical excitation, the photoluminescence (PL) emission, excited state lifetime of the nanophosphor, exhibits greater performance than its bulk counterpart. The homogeneous spherical structure of the nanophosphors as compared with solid lumps of bulk phosphors is the basis for almost 40% of the enhancement in nanophosphors' intense red emission compared to the bulk. Moreover, the thermal stability of the nanophosphor is much better than the bulk phosphor, which clearly indicates a key advantage of nanophosphor. The superior performance of Eu3+-doped Y4Al2O9 nanophosphors over their bulk counterparts has been demonstrated for industrial phosphor-converted light-emitting diodes and visualization of latent fingerprint.
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Kurrey, Manmohan Singh, and Bhoopendra Dhar Diwan. "Photo-Luminescence Properties of Novel ZnO Nano-Phosphors." Advanced Materials Research 938 (June 2014): 311–15. http://dx.doi.org/10.4028/www.scientific.net/amr.938.311.

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In this paper we have reported excellent luminescence properties of novel nanophosphors synthesized through solgel method with narrow size distribution. The size and morphology of the prepared ZnO nanophosphors has been confirmed through XRD and SEM. We have investigated their photo-luminescence (PL) intensity as a function of wavelength. We have prepared ZnO nanophosphor of size 6 nm. It is observed two different emission peaks near 375 nm in the ultraviolet (UV) and near 525 nm in the visible region. The prepared ZnO nanophosphor has enough potential for optoelectronic applications. Keywords: Dosimetry; Thermo-luminescence; Zinc oxide; Nanophosphors.
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Chatterjee, Rituparna, Subhajit Saha, Karamjyoti Panigrahi, Uttam Kumar Ghorai, Gopes Chandra Das, and Kalyan Kumar Chattopadhyay. "Blue Emitting BaAl2O4:Ce3+ Nanophosphors with High Color Purity and Brightness for White LEDs." Microscopy and Microanalysis 25, no. 6 (September 26, 2019): 1466–70. http://dx.doi.org/10.1017/s1431927619014958.

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AbstractIn this work, strongly blue emitting Ce3+-activated BaAl2O4 nanophosphors were successfully synthesized by a sol–gel technique. The crystal structure, morphology, and microstructure of the nanophosphors have been studied by X-ray powder diffraction, field emission scanning electron microscopy, and high-resolution transmission electron microscopy. The photoluminescence spectra show the impact of concentration variation of Ce3+ on the photoluminescence emission of the phosphor. These nanophosphors display intense blue emission peaking at 422 nm generated by the Ce3+ 5d → 4f transition under 350 nm excitation. Our results reveal that this nanophosphor has the capability to take part in the emergent domain of solid-state lighting and field-emission display devices.
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Polyakov, Vladimir, Zaira Gadzhimagomedova, Daria Kirsanova, and Alexander Soldatov. "Synthesis Optimization of BaGdF5:x%Tb3+ Nanophosphors for Tunable Particle Size." Materials 15, no. 23 (December 1, 2022): 8559. http://dx.doi.org/10.3390/ma15238559.

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X-ray photodynamic therapy (XPDT) is aimed at the treatment of deep-located malignant tumors thanks to the high penetration depth of X-rays. In XPDT therapy, it is necessary to use materials that effectively absorb X-rays and convert them into visible radiation-nanophosphors. Rare-earth elements, fluorides, in particular, doped BaGdF5, are known to serve as efficient nanophosphor. On the other hand, the particle size of nanophosphors has a crucial impact on biodistribution, cell uptake, and cytotoxicity. In this work, we investigated various Tb:Gd ratios in the range from 0.1 to 0.5 and optimized the terbium content to achieve the maximum luminescence under X-ray excitation. The effect of temperature, composition of the ethylene glycol/water solvent, and the synthesis technique (solvothermal and microwave) on the size of the nanophosphors was explored. It was found that the synthesis techniques and the solvent composition had the greatest influence on the averaged particle size. By varying these two parameters, it is possible to tune the size of the nanophosphor particles, which make them suitable for biomedical applications.
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Park, Je Hong, Sung Hoon Lee, Jong Su Kim, Tae Wan Kim, and Hong Lee Park. "Comparative Analysis of ZnS:Mn2+ Nanophosphors Prepared by Hydrothermal and Low Temperature Precipitation Methods." Solid State Phenomena 128 (October 2007): 53–58. http://dx.doi.org/10.4028/www.scientific.net/ssp.128.53.

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Manganese-doped ZnS nanophosphors were synthesized by two different methods: hydrothermal and low-temperature precipitation methods. The nanophosphors prepared by the hydrothermal precipitation and low-temperature methods had the size of 20 nm and 4 nm, respectively, and both were the cubic phase. The emission intensity of the nanophosphor prepared by the hydrothermal method was optimized at 10 mole % of Mn2+ concentration whereas that by low-temperature precipitation method was optimized at 3 mole % of Mn2+. The precipitationprepared nanophosphor, of size 4nm, showed a blueshift in the excitation spectrum and a redshift in the emission spectrum compared to the hydrothermal-prepared 20 nm nanophosphor. These phenomena can be explained in terms of the quantum confinement effect. The decay times especially were lengthened with decreasing particle size. This can be explained in terms of the variation in the transition probability induced from the quantum confinement effect.
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Hyun, Jae-Young, Ki-Hyun Kim, Jae-Pil Kim, Won-Bin Im, Kadathala Linganna, and Ju-Hyeon Choi. "Enhancement of Luminescence Efficiency of Y2O3 Nanophosphor via Core/Shell Structure." Nanomaterials 11, no. 6 (June 14, 2021): 1563. http://dx.doi.org/10.3390/nano11061563.

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We successfully fabricated Y2O3:RE3+ (RE = Eu, Tb, and Dy) core and core–shell nanophosphors by the molten salt method and sol–gel processes with Y2O3 core size of the order of 100~150 nm. The structural and morphological studies of the RE3+-doped Y2O3 nanophosphors are analyzed by using XRD, SEM and TEM techniques, respectively. The concentration and annealing temperature dependent structural and luminescence characteristics were studied for Y2O3:RE3+ core and core–shell nanophosphors. It is observed that the XRD peaks became narrower as annealing temperature increased in the core–shell nanophosphor. This indicates that annealing at higher temperature improves the crystallinity which in turn enhances the average crystallite size. The emission intensity and quantum yield of the Eu3+-doped Y2O3 core and core–shell nanoparticles increased significantly when annealing temperature is varied from 450 to 550 °C. No considerable variation was noticed in the case of Y2O3:Tb3+ and Y2O3:Dy3+ core and core–shell nanophosphors.
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Evstropiev, S. K., V. V. Demidov, D. V. Bulyga, R. V. Sadovnichii, G. A. Pchelkin, D. N. Shurupov, Yu F. Podrukhin, A. S. Matrosova, N. V. Nikonorov, and K. V. Dukelskii. "YAG : R3+ (R = Ce, Dy, Yb) nanophosphor-based luminescent fibre-optic sensors for temperature measurements in the range 20 – 500 °C." Quantum Electronics 52, no. 1 (January 1, 2022): 94–99. http://dx.doi.org/10.1070/qel17971.

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Abstract We report the development of a group of luminescent fibre-optic temperature sensors that use Ce3+-, Dy3+-, and Yb3+- doped yttrium aluminium garnet (YAG) nanophosphors as thermosensitive materials. The nanophosphors have been prepared in the form of powders with a crystallite size from 19 to 27 nm by a polymer – salt method and exhibit bright luminescence at 550 (YAG : Ce3+), 400, 480 (YAG : Dy3+), and 1030 nm (YAG : Yb3+). The sensor design includes a silica capillary, partially filled with a nanophosphor, and two large-aperture multimode optical fibres located in the capillary, which deliver excitation light and receive and transmit the photoluminescence signal. The photoluminescence signal amplitude of all the sensors decreases exponentially with increasing temperature, pointing to characteristic thermal quenching of photoluminescence and adequate operation of the devices up to 500 °C. The highest temperature sensitivity among the fibre-optic sensors is offered by the YAG : Ce3+ nanophosphor-based devices.
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Koneru, Girija Venkateswara, Venkata Nagendra Kumar Putta, and Sirisha Bandi. "Hydrothermal Synthesis, Structural Analysis and Photoluminescence Study of Nd3+/Ho3+ Doped Nanophosphors." Oriental Journal Of Chemistry 40, no. 1 (February 25, 2024): 49–54. http://dx.doi.org/10.13005/ojc/400106.

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Through photoluminescence (PL) investigations, this work shows that the hydrothermal technique of nanomaterial synthesis can successfully produce GdPO4:Nd3+/Ho3+ nanophosphors that display luminescence properties. Down-conversion peaks that produce green and red light arise at certain wavelengths (465, 550, and 674 nm) in response to stimulation at 300 nm. The analysis indicates the P-O CT band of Ho3+ ions and non-radiative resonance energy transfer, which boosts Ho3+ ion emission. GdPO4:Nd3+/Ho3+, an up-conversion (UC) nanophosphor, exhibits efficient luminescence output, with Ho3+ ions being attributed to distinct peaks in the up-conversion emission spectra (465 nm, 550 nm, and 674 nm). Nd3+ ions under strong 808 nm laser irradiation promote these peaks. The study produces well-crystalline nanoparticles with diameters ranging from a few nanometers to tens of nanometers by using the hydrothermal synthesis approach. Under PLE tests, the nanophosphors show an impressive quantum yield, suggesting a wide range of possible uses in the field of nanophosphor materials.
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Peng, Ling Ling, Bi Tao Liu, Ying Deng, and Tao Han. "Effects of the Sr/Si Ratio on the Photoluminescence Properties of Sr3SiO5:Eu2+ Nanophosphors." Applied Mechanics and Materials 341-342 (July 2013): 225–28. http://dx.doi.org/10.4028/www.scientific.net/amm.341-342.225.

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Sr3SiO5:Eu2+ nanophosphors for white LEDs were synthesized by solgel method. The crystalline phases were examined with X-ray diffraction (XRD). Luminescence properties were studied, and effects of the Sr/Si ratio on the emission spectra were also studied. The nanophosphor showed a broad excitation band from 300 to 500 nm and a broad band emission peaking at 593 nm due to the typical electron transition of Eu2+ 4f74f65d1. Remarkable enhancement in luminescence characteristics was observed when excesses silica was used. This phenomenon may be attributed to the improvement of Si sensitized the luminescence of Eu2+ in the Sr3SiO5 nanophosphor.
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Wu, Mihye, Hyemin Park, Eun Gyu Lee, Sanghun Lee, Yu Jin Hong, and Sungho Choi. "Luminescence Quenching Behavior of Hydrothermally Grown YVO4:Eu3+ Nanophosphor Excited under Low Temperature and Vacuum Ultra Violet Discharge." Materials 13, no. 15 (July 23, 2020): 3270. http://dx.doi.org/10.3390/ma13153270.

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The luminescence quenching behavior and energy transfer process in hydrothermally grown Eu3+-doped YVO4 nanophosphors were studied using low temperature photoluminescence spectroscopy. The luminescence efficiency of nanophosphor is dependent on the acidity of its solution media and the post annealing condition after hydrothermal processing. The overall results suggest that the abnormal luminescence behavior of Eu3+-doped nanocrystalline YVO4 under low temperature photoexcitation is due to the incorporated non-radiative hydroxyl groups often encountered in hydrothermal synthesis as well as to the inefficient energy transfer to luminescent ions from vanadate groups.
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Dissertations / Theses on the topic "Nanophosphors"

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Oakland, Chloe. "Lanthanide upconversion nanophosphors as platforms for luminescent biosensing applications." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/lanthanide-upconversion-nanophosphors-as-platforms-for-luminescent-biosensing-applications(5a40bf86-83bb-455e-93c9-7ac488955c45).html.

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Biosensors are instrumental in the detection of analytes in a wide range of areas including enzyme kinetics and disease diagnosis. A proof-of-principle upconversion nanophosphor (UCNP) based biosensor based on luminescence energy transfer between UCNPs, acting as the energy transfer donor, and enzymes and biologically relevant proteins, the energy transfer acceptor is reported here. Analyte detection has been performed by ratiometric sensing by monitoring the change in the multiple emission bands of the UCNPs. Chapter 1 is an introduction into the emerging field of UCNPs as biosensing agents. These nanoparticles offer numerous advantages over current biosensing agents (namely organic dyes and quantum dots) including resistance to photobleaching and photoblinking, long emissive lifetimes, a large anti-Stokes' shift and near infrared (nIR) excitation to eliminate autofluoresence, and multiple characteristic emission bands for sensing multiple analytes. Chapter 2 describes the synthesis and characterisation of Yb3+/Tm3+ and Yb3+/Er3+ co-doped UCNPs via a range of different preparative methods; thermal decomposition, microwave irradiation and a one-step solvothermal process to produce hydrophilic UNCPs. In addition, commercial UCNPs, kindly donated by Phosphor Technology, were also characterised and used as a benchmark for characterisation of the newly synthesised UCNPs. Chapter 3 describes the detection of the enzyme pentaerythritol tetranitrate reductase (PETNR), through energy transfer between the commercial Yb3+/Tm3+ doped UCNPs and the enzyme using ratiometric sensing. These proof-of-principle results were published in Dalton Transactions. In addition, ratiometric change of the UCNP emission bands was able to monitor the enzyme-substrate turnover in a two electron redox reaction. Chapter 4 describes techniques for increasing the scope and sensitivity of the proof-of-principle UCNP-enzyme biosensing system. Small, hydrophilic Yb3+/Tm3+ and Yb3+/Er3+ doped UCNPs, synthesised in chapter 2, were able to detect glucose oxidase and cytochrome c, in addition to PETNR. Covalent attachment of PETNR to Yb3+/Tm3+ doped UCNPs was additionally achieved. Chapter 5 describes the incorporation of UCNPs into optical ring resonators (ORRs) in order to develop a lost cost, label-free, rapid response biosensor. Drop casting and inkjet printing methods for the deposition of UCNPs onto these devices were investigated and emission of UCNPs was achieved, for the first time, by ORR excitation.
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VILLA, IRENE. "Structural and morphological tuning of inorganic luminescent nanophosphors - towards applications in sensing and lighting." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2015. http://hdl.handle.net/10281/87314.

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I materiali luminescenti nanostrutturati sono largamente studiati per applicazioni in lampade e display, come scintillatori e nell’imaging biomedico. Pertanto, la ricerca nei nanomateriali prevede lo sviluppo di metodi di sintesi all’avanguardia per il controllo della loro struttura, morfologia e drogaggio. L’utilizzo di polveri nanocristalline per la fabbricazione di nanocompositi permette di ridurre l’incorrere di diverse problematiche come la diffusione della luce emessa; inoltre la dimensione nanometrica dei materiali è un requisito fondamentale per le applicazioni in biotecnologia, per la loro veicolazione attraverso il sangue e la penetrazione nelle cellule. Infine, la realizzazione di nanoparticelle (NP) aventi fase cristallina cubica permetterebbe la progettazione di ceramiche ottiche ad alta densità e quindi di una nuova classe di materiali luminescenti. L’ossido di afnio (HfO2) è stato considerato come fosforo di grande interesse grazie alle sue eccellenti proprietà chimiche e fisiche. In questo lavoro si sono investigate le proprietà di luminescenza e scintillazione di NP di HfO2 di diametro < 5 nm. Le NP pure e drogate con ioni di terre rare (TR) sono state fabbricate attraverso un processo di sintesi appositamente elaborato e ottimizzato. Il lavoro condotto ha permesso di controllare simultaneamente le proprietà strutturali e di luminescenza nelle NP. Particolare attenzione è stata rivolta al ruolo del drogaggio con ioni europio e lutezio tramite sintesi sol-gel non acquosa. L’analisi elementale, la caratterizzazione strutturale e morfologica con XRD, TEM/SEM, insieme alla spettroscopia vibrazionale Raman/IR, hanno confermato la trasformazione della fase cristallina da monoclina a cubica per concentrazioni > 5% mol di ioni Lu3+e Eu3+. Le proprietà ottiche sono state studiate attraverso tecniche di radio- e foto-luminescenza. I risultati ottenuti rappresentano un importante traguardo sia per una migliore comprensione della relazione struttura-proprietà di materiali di dimensione nanometrica, che per l’analisi della applicabilità di questi ultimi in campo tecnologico. In questo lavoro è stata dimostrata la possibilità di modificare lo spettro di emissione delle NP drogando simultaneamente con diverse TR e stabilizzando la fase cubica con l’incorporazione di ioni di Lu3+ otticamente inerte. L’HfO2 è un promettente materiale sia come matrice ospite per le TR che per la sua luminescenza intrinseca. NP non drogate sono state studiate considerando l’effetto della dimensione e della fase cristallina sulla luminescenza. Si è individuata la presenza di una banda di emissione composita nell’intervallo di lunghezze d’onda visibili, possibilmente correlata a difetti di superficie intrinseci o a impurezze del materiale. La sua intensità varia in funzione di trattamenti termici che portano alla modifica della superficie e del diametro delle NP, ed è confrontabile all’efficienza di materiali luminescenti commerciali usati come standard. In parallelo, sono state studiate le proprietà di NP luminescenti per applicazioni biologiche. Le nuove tecniche diagnostiche per immagini in vivo a fluorescenza con alta risoluzione e profondità di penetrazione si basano sulla luminescenza di NP nella finestra di trasparenza del tessuto biologico (1000-1400 nm). Inoltre, l’eccitazione a basse energie porta alla riduzione dell’autofluorescenza generata dai tessuti, componenti intra corporee e molecole organiche della dieta degli animali trattati con le NP. In questa ricerca, è stato dimostrato che l’utilizzo della banda a 1.3 m di ioni di Nd3+ in SrF2 permette di effettuare analisi di biodistribuzione e ottenere immagini in assenza di autofluorescenza e ad alto contrasto. La luminosità, la stabilità chimica e fisica così come l’elevata biocompatibilità rendono le NP di SrF2 promettenti per applicazioni biotecniche, bioimmagini a fluorescenza e future strategie diagnostiche.
Luminescent materials have found a wide variety of applications as phosphors for fluorescent lighting, display devices, X-ray monitoring and imaging, scintillators, and in biomedical imaging. The research on nanostructured materials resulted in the development of novel synthetic methods to control their structure, morphology, and doping. When the size of crystalline powders is tailored down to the nanoscale, several advantages are achieved, like the reduction of the emitted light scattering when fabricating optical nanocomposites. Nanoscale dimensions are also necessary in biotech applications where the material is required to travel in blood vessels and penetrate into cells. Finally, the realization of high density optical ceramics by nanoparticles (NPs) compaction can be pursued, especially with materials that possess cubic crystalline structure, leading to the bottom-up fabrication of a new class of luminescent materials. Hafnium oxide (HfO2) has gained interest in the last years as an attractive nanophosphor because of its excellent physical and chemical properties. In this work, the luminescence and scintillation properties of pure and rare-earth (RE) doped HfO2 NPs with a diameter < 5 nm have been investigated, obtained through a purposely designed synthetic strategy. This work was aimed at controlling the structural properties of NPs while optimizing their optical features. A particular attention has been paid to the role of doping with europium and lutetium ions through the non-aqueous sol-gel method. Structure and morphology characterization by XRD, TEM/SEM, elemental analyses, and Raman/IR vibrational spectroscopies have confirmed the occurrence of the HfO2 cubic polymorph for dopant concentrations larger than 5% mol for trivalent Lu3+ and Eu3+ ions. Optical properties have been investigated by radio- and photo-luminescence spectroscopy. Besides the relevance in application related issues, the results here reported represent an important dataset for a better comprehension of the structure-property relationship in materials confined into nanoscale dimensions. We also demonstrated the possibility of tuning the emission spectrum by multiple RE doping, while deputing the NP cubic structural stabilization to optically inert Lu3+ ions. Given the importance of HfO2 as host material for RE, its intrinsic optical response is also worth of investigation. Undoped HfO2 NPs were studied considering the effect of the size and of the crystal phase. A broad composite emission was observed in the visible range, potentially correlated both to intrinsic surface defects and to impurities. Its intensity can be varied by thermal treatments leading to surface modifications as well as to variations of particle dimensions. Its efficiency has been found to be comparable to that of standard commercial materials, evidencing the potential of pure HfO2 NPs as efficient phosphors. In parallel, we also investigated the use of emitting NPs for biological applications. Novel approaches for high contrast, deep tissue, in vivo fluorescence biomedical imaging are based on infrared-emitting NPs working in the so-called second biological window (1000 -1400 nm), where the partial transparency of tissues allows for the acquisition of high resolution, deep tissue images. In addition, the infrared excitation also leads to a reduction of auto-fluorescence generated by tissues, intra-body components, and specimen's diet. In my work, I exploited how the 1.3m emission band of Nd3+ ions embedded in SrF2 nanoparticles can be used to produce auto-fluorescence free, high contrast fluorescence images and bio-distribution studies. The strong brightness, the chemical and physical stability as well as high biocompatibility make Nd:SrF2 nanocrystals very promising infrared nanoprobes for in vivo imaging experiments in the second biological window.
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Reip, Alexander. "Studies on the synthesis and use of rare earth doped nanophosphors for application on latent fingerprints." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/11626.

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Nanotechnology has been increasingly employed in forensic science for the detection of latent fingerprints, using multiple techniques from new aluminium nanomaterials for dusting to quantum dot dispersions, to try to increase and enhance areas where prints are likely to be found at scenes of crime. Different substrates use a diverse range of methods to develop prints when they are found and each method has its own drawbacks. It is not viable to use many of these techniques in conditions other than in a laboratory due to the harmful environmental effects they can cause over long term use. With this in mind a new easier to use technique that can be used on any substrate from wood to glass to paper was looked into. A range of nano-sized rare earth phosphor precursors were synthesised using homogeneous precipitation and solid state methods which were then converted to phosphors by firing at 980oC. Eu3+ and Tb3+ doped Y2O3, YVO4 and Y2O2S were chosen for their luminescent intensity. Analysis of each of the phosphors was carried out using multiple techniques and a single host lattice chosen for continuation. Y2O3:Eu3+ and Y2O3:Tb3+ were coated using a modified Stöber process to try and decrease the agglomeration of particles as well as allowing for surface modification to take place. Modifications of the surface were prepared and analysed, and these particles were then used in multiple fingerprint examinations to examine the adherence on fingerprints of different ages. The surface modifications manifested great adherence to the fingerprint residue even after two weeks elapsed and showed great promise after a two year period.
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Li, Rui. "Plastic UV radiation protection operating by Stokes emission." Thesis, Brunel University, 2013. http://bura.brunel.ac.uk/handle/2438/12434.

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A range of inorganic nanoparticles/nanophosphors that act as ultraviolet radiation absorbers were characterised and assessed in this thesis. Iron doped lithium aluminate phosphor was synthesised using a solid state reaction and also by flame spray pyrolysis. The phosphors prepared by different synthesis methods were characterised to identify their crystal structures and morphologies. Downconverting photoluminescent properties of the phosphors both as pure powders and embedded in polypropylene by co-rotating twin screw extrusion are reported. Zinc oxide nanoparticles made by flame spray pyrolysis were also investigated. They were incorporated into polymers by means of three different approaches including co-rotating twin screw extrusion, spin coating and solvent casting. The resulted composite films were explored to understand the distribution of the zinc oxide nanoparticles. The transmittance and ultraviolet absorption of the nanocomposites were studied and are reported herein. Another set of nanophosphors studied were zinc rich luminescent zinc oxides. They were prepared from the zinc oxide nanoparticles by firing them in a reducing atmosphere. The as-prepared nanophosphors manifested good downconverting photoluminescent properties and maintained their functions when embedded into polystyrene by solvent casting. In this thesis a new route of synthesising aluminium doped zinc oxide nanoparticles was also established. This new approach was based on a series of unexpected results within some trials that were attempting to coat a layer of alumina on the zinc oxide nanoparticles. The concentration of the Al3+ in the final product could be adjusted by tailoring the amount of the Al3+ in the reactants during the synthesis procedures. It was also possible to coat various zinc oxide nanostructures with the aluminium doped zinc oxide.
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Smara, Zakarya. "Etudes des propriétés optiques de nanoparticules de fluorures Na(Y,Bi)F4 dopées par des ions de terres rares et synthétisées par coprécipitation." Electronic Thesis or Diss., Université Clermont Auvergne (2021-...), 2021. http://www.theses.fr/2021UCFAC030.

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Ce travail est consacré à l’élaboration de nanoluminophores de formulations β-NaBiF4 et α-NaYF4 monodopés Eu3+, Tb3+, Pr3+, codopés avec Yb3+ et tridopés avec Ce3+. Ces matériaux ont été préparés par coprécipitation, et les paramètres de synthèse ont été optimisés afin de produire des nanocubes (NCs) avec des longueurs d’arête entre 35 et 65 nm, de façon reproductible et avec une distribution de taille étroite. Les NCs de fluorures obtenus ont été caractérisés d’un point de vue structural (DRX, IR), morphologique (MEB et TEM) et optique (photoluminescence) permettant de confirmer leurs puretés cristallines d’une part et d’enregistrer des répartitions spectrales de luminescence conformes à celles attendues d’autre part. L’analyse des spectres d’émission et des déclins de la fluorescence, sous excitations UV et/ou proche infrarouge, a permis de démontrer que des processus de conversion Stokes et anti-Stokes efficaces se produisent dans ces NCs. Les résultats sont discutés en considérant divers chemins de désexcitations radiatives et de transfert d’énergie, permettant de conclure que l’on peut générer sur un même NC les deux processus, même si ces derniers sont en concurrence dans certains cas
This work is devoted to the development of nanophosphors of formulations β-NaBiF4 and α-NaYF4 monodoped Eu3+, Tb3+, Pr3+, codoped with Yb3+ and tridoped with Ce3+. These materials were prepared by coprecipitation, and the synthesis parameters were optimized to produce nanocubes (NCs) with edge lengths between 35 and 65 nm, reproducibly and with a narrow size distribution. The obtained NCs were characterized from a structural (XRD, IR), morphological (SEM and TEM) and optical (photoluminescence) point of view, making it possible to confirm their crystalline purities on the one hand and to record spectral distributions of luminescence in accordance with those expected on the other hand. Analysis of emission spectra and fluorescence decays, under UV and / or near infrared excitations, has demonstrated that efficient Stokes and anti-Stokes conversion processes occur in these NCs. The results are discussed by considering various paths of radiative de-excitations and energy transfer, making it possible to conclude that the two processes can be generated on the same NC, even if the latter are in competition in certain cases
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Wärnheim, Alexander. "Synthesis and characterization of a water-based hybrid nanophosphor-nanocellulose ink." Thesis, KTH, Tillämpad fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233378.

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Zanella, Sofia <1993&gt. "Luminescent materials based on lanthanide doped bismuth oxyfluoride particles for nanophosphor and nanothermometer applications." Master's Degree Thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/14410.

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The project is focus on the synthesis and characterization of lanthanide bismuth oxyfluoride particles. The samples are synthesized through homogeneous precipitation using a microwave reactor to heat. Furthermore, by doping with different lanthanides (Tb, Eu, Tb-Eu; Pr; Nd; Yb-Ln, Ln=Er,Yb,Tm) it is tested how the optical response of the systems can be in terms of luminescence spectroscopy. The synthesized Ln3+ NPs are tested for the biological applications as nanothermometer. In recent times Luminescent nanothermometers have been widely investigated because they relate the local temperature of a biological system with their emission, as a result of an external radiation. Through these systems there is the possibility of excitation and / or emission in the so-called first and second biological window. The studies of these project are focused on NPs doped Ln3+ as thermal and emitting probes.
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8

Dušan, Milojkov. "Dobijanje nanofosfora na bazi fluorapatita dopirani Pr3+ jonima za bio-medicinske primene." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=114851&source=NDLTD&language=en.

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    Luminescentni nanokristali (nanofosfori) na bazi fluorapatita (FAP-a) dopirani elementima retkih zemalja idealni su kontrastni agenti za bio-medicinske primene, kao što su detekcije, snimanja, praćenja i terapije ćelija kancera. Kancer je jedna od najčešćih bolesti modernog doba čiji uspeh lečenja zavisi od rane dijagnostike i neinvazivnog tretmana. Luminescentne nanočestice mogu uneti inovativnu paradigmu u lečenje kancera kombinovanjem biosnimanja, dijagnostike i tretmana. Za studije fluorescentnih biosnimanja nanokristali fluorapatita dopirani retkim zemljama kao kontrastni agenti pružaju značajne prednosti u vidu velikih kontrasta i dugotrajnosti luminescencije, i što je još važnije visoke biokompatibilnosti, netoksičnosti i bioaktivnosti. Glavni ciljevi ove doktorske disertacije su sinteza novih luminescentnih multifotonskih bionanomaterijala na bazi fluorapatita dopiranih jonima prazeodimijuma (Pr3+), njihova karakterizacija i evaluacija  primene za fluorescentna biosnimanja kancera. Sintezom nanoprahova u umerenim uslovima metodom ko-precipitacije, a potom sušenjem na 110 oC i kalcinacijom na temperaturama od 700 i 1000 oC očekuje se pronalaženje najboljih uslova za dobijanje novih nanofosfora koji bi našli i različite bio-medicinske primene u oblasti fluorescentnih biosnimanja. Proučavane su tri vrste PrFAP nanokristala, sa 0,1%, 0,5% i 1% atomskih procenta Pr3+, zajedno sa nedopiranim FAP kontrolnim uzorkom. Nivoi energije aktivator jona Pr3+ sadrže metastabilna multipletna stanja koja nude mogućnosti efikasnih emisionih linija u više boja u FAP nanokristalima, kao i u infracrvenoj i ultravioletnoj oblasti spektra. Metodom ko-precipitacije na sobnoj temperaturi (25 oC), a potom sušenjem na 110 oC, sintetisani su monofazni heksagonalni nanokristali PrFAPs nepravilnog sfernog oblika. Termičkom analizom sintetisanih uzoraka, na osnovu detektovanih temperaturnih opsega procesa dekarbonacije i dehidroksilacije, utvrđene su temperature kalcinacije od 700 i 1000 oC. Termička analiza i karakterizacija uzoraka su pokazale da Pr3+ joni dovode do stabilizacije FAP strukture na višim temperaturama, što je pripisano unosu lantanoidnih jona sa specifičnim magnetnim osobinama u sistem i stvaranju jačih privlačnih sila sa O2- anjonima. Nanokristali sušeni na 100 oC i kalcinisani na 1000 oC, zbog prisustva defekata kristalne rešetke koji zadržavaju emisiju Pr3+ jona, nisu pokazali luminescentne karakteristike od značaja za primene u medicinskim fluorescentnim biosnimanjima. Kalcinacijom uzoraka na 700 oC izrađen je novi tip aktiviranih fluorapatitnih nanokristala dopiranih prazeodimijumom (PrFAPa) sa ekscitaciono-emisionim profilima u vidljivom delu spektra. Fizičko-hemijska karakterizacija potvrdila je sferne kristale heksagonalne strukture do nanometrske veličine od oko 20 nm. Kvantno-hemijske kalkulacije predvidele su da se joni Pr3+ ugrađuju u kristalnu rešetku FAP nanokristala na položaju Ca2 (6h), što je praćeno deformacijama pozicije F- jona. Pretpostavljeni mehanizam supstitucije je jedan jon Pr3+ za jedan Ca2+, s delimičnom supstitucijom anjona F– sa O2– i OH– i stvaranjem vakansi usled postizanja neutralnosti sistema. Rezultati in vitro biokompatibilnosti i hemokompatibilnosti pokazali su da nanokristali PrFAPa nisu toksični za žive ćelije. Pored toga, internalizacija PrFAPa nanokristala od strane ćelija kancera kože (A431) i pluća (A549) je proučavana korišćenjem konfokalne mikroskopije i mikroskopije širokog polja zasnovane na fluorescenciji. Nanokristali pokazuju karakterističnu zelenu emisiju na 545 nm (3P0→3H5 tranzicija Pr3+ jona) i narandžastu emisiju na 600 nm (1D2→3H4), koje su korišćene za razlikovanje od pozadinske autofluorescencije ćelije. Studije dobijenih slika konfokalnom mikroskopijom u plavom, zelenom i crvenom kanalu su otkrile da nanokristali mogu da prepoznaju ćelijsku površinu i da se lepe za nju, ali nisu potvrdile ulazak nanokristala u ćelije. Mikroskopija širokog polja je detektovala emisione prelaze u zelenoj i narandžastoj boji i potvrdila da luminescentni signal dolazi iz unutrašnjosti ćelija. Korišćenjem rezonantne ekscitacije od 488 nm i emisije od 600 nm PrFAPa nanokristala, konfokalnom mikroskopijom ekstrahovan je signal fluorescencije iz unutrašnjosti ćelija kancera. Ortogonalne projekcije u 3D konfokalnim ravnima pokazuju da su nanokristali u stanju da uđu u ćelije kancera i da se raspoređuju po citoplazmi. Sveukupno, ovako dobijeni nanokristali PrFAPa su biokompatibilni i od testiranih uzoraka, aktivirani nanokristali dopirani sa 0,5% Pr3+ pokazuju najviše potencijala za primenu u medicinskim fluorescentnim biosnimanjima kao kontrastni agenti.  
Luminescent nanocrystals (nanophosphorus) based on fluorapatite (FAP) doped with rare earth elements are ideal contrast agents for biomedical applications such as cancer cell detection, imaging, tracking and therapy. Cancer is one of the most common diseases of the modern times whose success of the cure depends on early diagnosis and non-invasive treatment. Luminescent nanoparticles can bring an innovative paradigm into the treatment of cancer by combining bioimaging, diagnostics and treatment. Rare earth doped fluorapatite nanocrystals as contrast agents for studies of fluorescence bioimaging, offer significant advantages in terms of high contrasts and long-term luminescence, and more importantly high biocompatibility, non-toxicity and bioactivity. The main objectives of this doctoral dissertation are the synthesis of novel luminescent multiphoton bionanomaterials based on fluorapatites doped with praseodymium ions (Pr3+), their characterization and evaluation of their application for cancer fluorescence bioimaging. Synthesis of nanopowders under moderate conditions by the co-precipitation method, followed by dried at 110 °C and calcination at 700 and 1000 °C, is expected to find the best conditions for obtaining new nanophosphors that would find different bio-medical applications in the field of fluorescence bioimaging. Three types of PrFAP nanocrystals were studied, with 0,1%, 0,5%, and 1% atomic percentages of Pr3+, together with an undoped FAP control sample. Energy levels of the Pr3+ ion activator contain metastable multiplet states that offer the possibility of efficient multi-color emission lines in FAP nanocrystals as well as in the infrared and ultraviolet regions of the spectrum. Single-phase hexagonal nanocrystals PrFAPs of irregular spherical shape were synthesized by the method of co-precipitation at room temperature (25 oC) and then drying at 110 oC. Thermal analysis of the synthesized samples, based on the detected temperature ranges of the decarbonation and dehydroxylation processes, determined calcination temperatures of 700 and 1000 oC. Thermal analysis with characterization showed that Pr3+ ions lead to stabilization of the FAP structure at higher temperatures, which was attributed to the entry of lanthanoid ions with specific magnetic properties into the system and the creation of stronger attractive forces with O2- anions. Nanocrystals dried at 100 oC and calcined at 1000 oC, due to the presence of crystal lattice defects that quench the emission of Pr3+ ions, did not show luminescent characteristics of significance for applications in medical fluorescence imaging. Calcination of the samples at 700 oC produced a new type of activated praseodymium doped fluorapatite nanocrystals (PrFAPa) with excitation-emission profiles in the visible part of the spectrum. Physicochemical characterization confirmed spherical crystals of hexagonal structure up to a nanometer size of about 20 nm. Quantum-chemical calculations predicted that Pr3+ ions would be embedded in the crystal lattice of FAP nanocrystals at the Ca2 position (6h), which was followed by deformations of the F- ion position. The assumed substitution mechanism is one Pr3+ ion for one Ca2+, with partial substitution of F– anions with O2– and OH– and creation of vacancies due to achieving system neutrality. The results of in vitro biocompatibility and hemocompatibility showed that PrFAP nanocrystals were not toxic to living cells. In addition, the internalization of PrFAPa nanocrystals by skin (A431) and lung (A549) cancer cells was studied using fluorescence-based confocal microscopy and wide-field microscopy. The nanocrystals show characteristic green emission at 545 nm (3P0→3H5 transition of Pr3+ ion) and orange emission at 600 nm (1D2→3H4), which we use to discriminate from cell autofluorescence. Studies of the images obtained by confocal microscopy in the blue, green, and red channels revealed that nanocrystals could recognize the cell surface and adhere to it, but they did not confirm the entry of nanocrystals into the cells. The wide-field microscopy detected emission transitions in green and orange color, and confirmed that the luminescent signal was coming from inside the cells. Using resonant excitation of PrFAP nanocrystals at 488 nm and emission of 600 nm, confocal microscopy extracted the fluorescence signal from inside the cancer cells. Orthogonal projections across 3D confocal stacks show that the nanocrystals are able to enter the cells positioning themselves within the cytoplasm. Overall, the obtained PrFAPa nanocrystals are biocompatible and of the tested types, the 0,5% Pr3+ doped nanocrystals show the highest promise as a tracking nanoparticle probe for bioimaging applications.
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Fang, Ying-Chien, and 方盈倩. "Preparation and Characterization of Zinc-based nanophosphors for UV-white light LEDs." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/20204987556040475899.

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碩士
國立成功大學
電機工程學系碩博士班
94
Abstract Zinc sulfide (ZnS), as II-VI semiconductors with a wide band gap energy of 3.68eV, have received much attention due to their excellent luminescence properties and are commercially used in electroluminescence devices. They are candidate materials for phosphors that emit visible light. The major and important applications of phosphors are used as light sources, display devices, radiation detectors and so on. In this study, we prepare the nano-scaled ZnS based phosphors using solid state method and chemical precipitation method. Different dopants (Mn, Cu, Mg, Eu) have been introduced in the system. X-ray diffraction pattern, SEM, TEM, PL and CIE measurements have been used to investigate the characteristics of ZnS-based nano-phosphors for UV-white light LED applications. Firstly , we synthesize and characterize the luminescence properties of ZnS：Mn nanophosphors by solid state method with different S/Zn ratio and under different temperature. When S/Zn ratio is 0.65 and under 300℃, a near white light phosphors are obtained and C.I.E. is (0.309,0.311). Secondly, ZnS:Mn+2,ZnS:Cu+2 and ZnS:Eu+3 phosphors are prepared by chemical-precipitation method. From the emission spectra data, orange light with the emission peak at 593nm for ZnS:Mn+2 phosphors are detected, blue light at 470nm and green light at 520nm for ZnS:Cu+2 phosphors are detected, red light for ZnS:Eu+3 phosphors are also detected. It is possible to obtain white light phosphors by co-doping Cu+2,Eu+3 and Cu+2,Mn+2 in this system Thirdly, ZnS co-doped Mg+2 and Mn+2 phosphors are synthesized by chemical precipitation method. From the emission spectra data, near white light is observed for Zn0.49Mg0.49S: Mn+2 (2mol%) and C.I.E is(0.322,0.292).
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10

林盈志. "A Study on the Hydrothermal Synthesis and Luminescent Properties of Gadolinium Oxysulfide Nanophosphors." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/44553819374828201564.

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碩士
國立交通大學
應用化學系所
92
In this research we have successfully synthesized three series of Gd2O2S:R ( R = Tb3+, Pr3+, Eu3+) nanophosphors via a two-step process by utilizing simple hydrothermal apparatus at 140-200℃, followed by a annealing under H2S atmosphere at 500-1000℃. The correlation between phase purity, photoluminescence and microstructure of Gd2O2S:R nanophosphors were then characterized by X-ray diffraction, spectrofluorimeter, scanning microscope (SEM) and transmission microscope (TEM) techniques. Our research indicates that the pH values and temperature adopted in the hydrothermal synthesis to form nanocrystalline Gd(OH)3 precursor are the most important processing parameters in determining the grain morphology and sizes of Gd2O2S:R nanophosphors. The morphology of nanocrystalline Gd(OH)3 precursor was observed to change from granular to rod-shaped when pH was allowed to vary from 8 to 10. The average diameter of granular Gd2O2S:R was found to be ca. 80 nm, whereas the aspect ratio (c/a) for Gd2O2S:R nano-rods was found to be 10 with length and diameter of 200 nm and 20 nm, respectively, as indicated by TEM investigations. On the other hand, the luminescence and microstructure for bulk and nano-crystalline Gd2O2S:R phosphors prepared from solid-state and two-step hydrothermal routes, respectively, were also compared.
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Books on the topic "Nanophosphors"

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Nano keikōtai no kaihatsu to ōyō: Development and applications of nanophosphors. Tōkyō-to Chiyoda-ku: Shīemushī Shuppan, 2012.

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Upconversion Nanophosphors. Elsevier, 2022. http://dx.doi.org/10.1016/c2019-0-03788-0.

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Thomas, Sabu, Nandakumar Kalarikkal, Kanchan Upadhyay, and Ranuak Tamrakar. Upconversion Nanophosphors. Elsevier, 2021.

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Thomas, Sabu, Nandakumar Kalarikkal, Kanchan Upadhyay, and Ranuak Tamrakar. Upconversion Nanophosphors. Elsevier, 2021.

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Book chapters on the topic "Nanophosphors"

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Cesaria, Maura, and Baldassare Di Bartolo. "Luminescence Spectroscopy of Nanophosphors." In NATO Science for Peace and Security Series B: Physics and Biophysics, 15–42. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-0850-8_2.

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Markose, Kurias K., R. Anjana, and M. K. Jayaraj. "Upconversion Nanophosphors: An Overview." In Materials Horizons: From Nature to Nanomaterials, 47–102. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3314-3_2.

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Xu, Jiating, and Jun Lin. "Upconversion Nanophosphors for Bioimaging." In Phosphor Handbook, 305–40. 3rd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098676-10.

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Tu, Langping, and Hong Zhang. "Upconversion Luminescence of Nanophosphors." In Phosphor Handbook, 319–36. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098690-5.

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Zhu, Qi, and Feng Wang. "Upconversion Nanophosphors for Photonic Application." In Phosphor Handbook, 285–304. 3rd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098676-9.

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Sun, Tianying, and Feng Wang. "Lanthanide-Doped Core–Shell Upconversion Nanophosphors." In Phosphors, Up Conversion Nano Particles, Quantum Dots and Their Applications, 289–309. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1590-8_9.

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Li, Fuyou, Wei Feng, Jing Zhou, and Yun Sun. "Lanthanide-Based Upconversion Nanophosphors for Bioimaging." In The Chemistry of Molecular Imaging, 299–319. Hoboken, NJ: John Wiley & Sons, Inc, 2014. http://dx.doi.org/10.1002/9781118854754.ch13.

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Chan, Ming-Hsien, Wen-Tse Huang, Michael Hsiao, and Ru-Shi Liu. "Design Growth of Nanophosphors and Their Applications." In Phosphor Handbook, 333–62. 3rd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003098669-10.

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Dorokhina, Anastasiya M., Vadim V. Bakhmetyev, and Maxim M. Sychov. "Hydrothermal Synthesis and Characterization of Mixed Fluoride Based Nanophosphors." In Advances in Intelligent Systems and Computing, 3–10. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67459-9_1.

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Hua, Yongbin, and Jae Su Yu. "Fabrication, Photoluminescence, and Applications of Rare-Earth Ions-Activated Nanophosphors." In Advanced Nanomaterials, 265–309. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11996-5_10.

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Conference papers on the topic "Nanophosphors"

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Kotov, Dmytro, Viktoriia Koval, Dinh Thi Thuy Duong, and So-Hye Cho. "Silica core-shell formation of nanophosphors." In 2017 IEEE 37th International Conference on Electronics and Nanotechnology (ELNANO). IEEE, 2017. http://dx.doi.org/10.1109/elnano.2017.7939752.

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Kumar, Satinder, A. K. Sharma, S. P. Lochab, and Ravi Kumar. "Thermoluminescence of Eu activated LiF nanophosphors." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4710042.

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Getzin, M., L. Gjesteby, S. McCallum, W. X. Cong, and G. Wang. "Investigation into multiphysics coupling via semiconducting nanophosphors." In 2015 41st Annual Northeast Biomedical Engineering Conference (NEBEC). IEEE, 2015. http://dx.doi.org/10.1109/nebec.2015.7117164.

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Ravindranadh, K., R. V. S. S. N. Ravikumar, and M. C. Rao. "Luminescent properties of Mn2+ doped apatite nanophosphors." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946130.

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Glais, E., C. Chaneac, and B. Viana. "ZnGa2O4:Cr3+ Nanophosphors for Thermometry at Nanoscale." In 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2019. http://dx.doi.org/10.1109/cleoe-eqec.2019.8873394.

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López-Luke, Tzarara, Elder de la Rosa, Andrea Ceja-Fernández, Juan Vivero-Escoto, Ana Lilia Gonzalez-Yebra, and Rubén Rodríguez-Rojas. "Upconversion emision of nanophosphors for cervical cancer detection." In Latin America Optics and Photonics Conference. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/laop.2014.lf2d.3.

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Diaz-Torres, L. A., E. De la Rosa, P. Salas, C. Angeles, and R. Rodriguez. "Facile synthesis and optical applications of ceramic nanophosphors." In 2008 Digest of the IEEE/LEOS Summer Topical Meetings. IEEE, 2008. http://dx.doi.org/10.1109/leosst.2008.4590461.

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Sharma, Anjali, Sunil Kumar, Vandana Sharma, J. K. Sharma, Sukhjeet Singh, R. B. Patel, and B. P. Singh. "Time Resolved Photoluminescence Studies of Doped ZnSe Nanophosphors." In INTERNATIONAL CONFERENCE ON METHODS AND MODELS IN SCIENCE AND TECHNOLOGY (ICM2ST-10). AIP, 2010. http://dx.doi.org/10.1063/1.3526247.

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Manhas, Mohit, Vinay Kumar, O. M. Ntwaeaborwa, and H. C. Swart. "Synthesis and photoluminescence properties of Ca3B2O6:Tb3+ nanophosphors." In SOLID STATE PHYSICS: Proceedings of the 58th DAE Solid State Physics Symposium 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4872653.

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Yadav, P. J., N. D. Meshram, C. P. Joshi, and S. V. Moharil. "Nanophosphors for radiation dosimeter used for personal monitoring." In Proceedings of the International Conference on Nanotechnology for Better Living. Singapore: Research Publishing Services, 2016. http://dx.doi.org/10.3850/978-981-09-7519-7nbl16-rps-253.

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Reports on the topic "Nanophosphors"

1

Alok M. Srivastava. Novel Nanophosphors for High Efficiency Fluorescent Lamps. Office of Scientific and Technical Information (OSTI), September 2005. http://dx.doi.org/10.2172/903180.

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Alok Srivatava. Novel Nanophosphors for High Efficiency Fluorescent Lamps. Office of Scientific and Technical Information (OSTI), March 2007. http://dx.doi.org/10.2172/969141.

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Carpenter, Colin M. Imaging Molecular Signatures of Breast Cancer with X-ray-Activated Nanophosphors. Fort Belvoir, VA: Defense Technical Information Center, September 2012. http://dx.doi.org/10.21236/ada574280.

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Carpenter, Colin M. Imaging Molecular Signatures of Breast Cancer with X-ray-Activated Nanophosphors. Fort Belvoir, VA: Defense Technical Information Center, January 2014. http://dx.doi.org/10.21236/ada602055.

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