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Journal articles on the topic 'Luminescence; Rare earth metals'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Escudero, Alberto, Ana I. Becerro, Carolina Carrillo-Carrión, et al. "Rare earth based nanostructured materials: synthesis, functionalization, properties and bioimaging and biosensing applications." Nanophotonics 6, no. 5 (2017): 881–921. http://dx.doi.org/10.1515/nanoph-2017-0007.

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AbstractRare earth based nanostructures constitute a type of functional materials widely used and studied in the recent literature. The purpose of this review is to provide a general and comprehensive overview of the current state of the art, with special focus on the commonly employed synthesis methods and functionalization strategies of rare earth based nanoparticles and on their different bioimaging and biosensing applications. The luminescent (including downconversion, upconversion and permanent luminescence) and magnetic properties of rare earth based nanoparticles, as well as their abili

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2

Barrera, A., M. L. Chávez, E. Chavira, T. A. García, and J. M. E. Carreto. "Perovskite gels combustion synthesis from rare earth aluminates. Development of multifuncional properties." MRS Advances 5, no. 62 (2020): 3301–13. http://dx.doi.org/10.1557/adv.2020.444.

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AbstractThe purpose of this work was the synthesis of the perovskites with rare earth, by gel combustion method with pigmenting, magnetic and luminescent properties. The synthesis of perovskite structure is important for material development, with multi features. In this work, the synthesis was from metal oxides by the method of combustion of gels at 500 °C, for 10 s. Color of perovskites obtained, with nanometric particle size (31-44 nm) was analysed by CIEL*a*b* with tonalities ranged from white to pink except for Pr-perovskites with yellow and brown. Its paramagnetic properties were verifie

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3

Mahata, Partha, Sudip Kumar Mondal, Debal Kanti Singha, and Prakash Majee. "Luminescent rare-earth-based MOFs as optical sensors." Dalton Transactions 46, no. 2 (2017): 301–28. http://dx.doi.org/10.1039/c6dt03419e.

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4

Smentek, Lidia, Brian G. Wybourne, and B. Andes Hess. "Theory of sensitized luminescence of rare earth-doped materials." Journal of Alloys and Compounds 341, no. 1-2 (2002): 67–70. http://dx.doi.org/10.1016/s0925-8388(02)00064-6.

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5

Lv, Yu Guang, Li Zhang, Kui Lin Lv, et al. "Synthesis, Characterization and Property of Nano Rare Earth Terbium Complex with Gatifloxacin." Applied Mechanics and Materials 541-542 (March 2014): 185–89. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.185.

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Rare earth metal complexes have special characteristics, such as extremely narrow emission bands and high internal quantum efficiencies, which are suitable to be used as the emission materials, chemistry and biological technology. Ternary nano complex of terbium gatifloxacin phenanthroline was synthesized.The composition and structure of ternary complex were characterized by element analysis, Mass Spectrometry (MS), UltraViolet Absorption Spectrometry (UV) and fluorescence spectra(FS). The influences of solubility, thermal stability and luminescent properties of complex as well as addition of

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6

Lei, Bingfu, Yingliang Liu, Junwen Zhang, Jianxin Meng, Shiqing Man, and Shaozao Tan. "Persistent luminescence in rare earth ion-doped gadolinium oxysulfide phosphors." Journal of Alloys and Compounds 495, no. 1 (2010): 247–53. http://dx.doi.org/10.1016/j.jallcom.2010.01.141.

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7

Liu, Wen Bin, Adu, Yu Guang Lv, et al. "Preparation and Luminescent Properties of the La³⁺ Doped Tb³⁺-Hydroxyapatite." Applied Mechanics and Materials 716-717 (December 2014): 32–35. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.32.

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In this paper, a rare earth metal terbium ion as the central metal ion, a nanohydroxyapatite powder of the lanthanum doped terbium was synthesis by precipitation with hydroxyapatite as ligand. The sample was characterized by infrared spectrum, fluorescence spectrum and X ray diffraction instrument, and the thermal properties and fluorescence properties, structure of powderes were discussed. A nanohydroxyapatite powder of the lanthanum doped terbium achieves the maximum luminous intensity, when the La3+ doping concentration of Tb3+ was HAP 5% (La3+ and Tb3+ mole fraction ratio) devices. Rare ea

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8

Jin, Dalai, Xiaojing Yu, Hong Yang, Hongliang Zhu, Lina Wang, and Yifan Zheng. "Hydrothermal synthesis and luminescence properties of Yb3+ doped rare earth stannates." Journal of Alloys and Compounds 474, no. 1-2 (2009): 557–60. http://dx.doi.org/10.1016/j.jallcom.2008.06.159.

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9

Blasse, G. "Luminescence of rare earth ions at the end of the century." Journal of Alloys and Compounds 192, no. 1-2 (1993): 17–21. http://dx.doi.org/10.1016/0925-8388(93)90172-j.

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10

Xiao, Ying-Hui, Zhao-Peng Deng, Zhi-Biao Zhu, Li-Hua Huo, and Shan Gao. "Rare earth metal–organic complexes constructed from hydroxyl and carboxyl modified arenesulfonate: syntheses, structure evolutions, and ultraviolet, visible and near-infrared luminescence." Dalton Transactions 46, no. 47 (2017): 16493–504. http://dx.doi.org/10.1039/c7dt03254d.

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11

Wang, Rui, Jianguo Tang, Na Kong, Yao Wang, Jixian Liu, and Jingquan Liu. "A Nano-Silver Enhancement Effect on the Luminescence of a Ligand–Eu3+ Complex via a SiO2 Spacer." Australian Journal of Chemistry 67, no. 4 (2014): 644. http://dx.doi.org/10.1071/ch13593.

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Luminescent rare earth complex (REC) nanocomposites, Eu(TTA)3Phen attached onto Ag@SiO2 nanoshells, were fabricated by facile wet chemistry and self-assembly techniques. Transmission electron microscopy, and fourier transform infrared and UV–Vis spectroscopy were used to investigate the step-by-step fabrication. The luminescence of REC was significantly enhanced using a silver core (size: 45 nm) surrounded by a 20-nm thick silica shell. Thicker or thinner silica shells afforded tuning of the metal-enhanced luminescence. The thiophene-TTA-containing REC fluorophore was able to etch the silver c

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12

Terebilenko, Katerina V., Nikolay S. Slobodyanik, Igor V. Zatovsky, and Vaycheslav N. Baumer. "Synthesis, Structure and Luminescence Properties of Rare-Earth Double Phosphates." Solid State Phenomena 200 (April 2013): 33–37. http://dx.doi.org/10.4028/www.scientific.net/ssp.200.33.

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The main crystallization trends of rare-earth complex oxides from alkaline phosphate-molybdate (tungstate) melts have been studied in a light of structure - luminescence properties relationships. The regions of formation MI3RE(PO4)2, REPO4 and MI2RE(PO4)(MVIO4) from self flux systems MI–P–RE–O (MI–alkaline metal; MVI–Mo, W) have been defined. The influence of MI/MVI ratio in the initial melt has been shown to play the key role in solid phase formation and structural peculiarities of REOx polyhedral condensation of compounds obtained.

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13

Kumar, Vineet, and Zhiping Luo. "A Review on X-ray Excited Emission Decay Dynamics in Inorganic Scintillator Materials." Photonics 8, no. 3 (2021): 71. http://dx.doi.org/10.3390/photonics8030071.

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Scintillator materials convert high-energy radiation into photons in the ultraviolet to visible light region for radiation detection. In this review, advances in X-ray emission dynamics of inorganic scintillators are presented, including inorganic halides (alkali-metal halides, alkaline-earth halides, rare-earth halides, oxy-halides, rare-earth oxyorthosilicates, halide perovskites), oxides (binary oxides, complex oxides, post-transition metal oxides), sulfides, rare-earth doped scintillators, and organic-inorganic hybrid scintillators. The origin of scintillation is strongly correlated to the

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14

Ekimov, E. A., I. P. Zibrov, S. A. Malykhin, R. A. Khmel’nitskii, and I. I. Vlasov. "Luminescence properties of diamond prepared in the presence of rare-earth elements." Inorganic Materials 53, no. 8 (2017): 809–15. http://dx.doi.org/10.1134/s0020168517080039.

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15

Katagiri, Shinya, Yasuchika Hasegawa, Yuji Wada, Kazunori Mitsuo, and Shozo Yanagida. "Temperature-dependent energy transfer in photo-sensitized luminescence of rare earth complexes." Journal of Alloys and Compounds 408-412 (February 2006): 809–12. http://dx.doi.org/10.1016/j.jallcom.2005.01.134.

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16

Czaja, M., S. Bodył, P. Głuchowski, Z. Mazurak, and W. Strek. "Luminescence properties of rare earth ions in fluorite, apatite and scheelite minerals." Journal of Alloys and Compounds 451, no. 1-2 (2008): 290–92. http://dx.doi.org/10.1016/j.jallcom.2007.04.058.

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17

Mishenina, Lyudmila N., Liliya A. Selyunina, and Tatiana M. Botvina. "Synthesis and Characteristics of CaAl₂O₄:Eu³⁺ Phosphor Prepared by Zol-Gel Method." Key Engineering Materials 670 (October 2015): 95–100. http://dx.doi.org/10.4028/www.scientific.net/kem.670.95.

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Alkaline earth metal aluminates activated by rare-earth ions (REn+) possess intensive luminescence upon UV excitation. The paper studies phase formation of calcium aluminate prepared by the sol-gel method. The stages of the end products’ formation using methods of the thermal and the infrared spectrometric analysis and X-ray diffraction are proposed. Dependence of phase composition, the surface morphology and luminescence properties on the annealing temperature of the precursor is investigated.

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18

Pisarski, Wojciech A., Karolina Kowalska, Marta Kuwik, et al. "Novel Multicomponent Titanate-Germanate Glasses: Synthesis, Structure, Properties, Transition Metal, and Rare Earth Doping." Materials 13, no. 19 (2020): 4422. http://dx.doi.org/10.3390/ma13194422.

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Novel multicomponent titanate-germanate glasses singly doped with transition metal (Cr3+) and rare earth ions (Eu3+) were synthesized and the glass transition temperatures and thermal stability parameters were determined using DSC measurements. X-ray diffraction analysis confirmed fully amorphous nature of the received samples. Their structural and optical properties were compared with germanate glasses without TiO2. Correlation between local structure and optical properties in titanate-germanate glasses is well evidenced by FT-IR, Raman, EPR, and luminescence spectroscopy. In particular, lumi

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19

McBean, Katie E., Matthew R. Phillips, and Ewa M. Goldys. "Synthesis and Characterization of Doped and Undoped ZnO Nanostructures." Microscopy and Microanalysis 12, no. 4 (2006): 327–30. http://dx.doi.org/10.1017/s1431927606060430.

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Zinc oxide (ZnO) nanoparticles have been produced using precipitation methods from ethanolic solution. Rare-earth metal doping was performed, and the effect of lithium codoping on the luminescence properties of the rare-earth doped products was assessed. The resulting particles were characterized using cathodoluminescence and scanning electron microscopy. It was found that lithium significantly enhanced the cathodoluminescence signal from the rare-earth ions, which has been attributed to the increased integration of the rare-earth ions into the ZnO structure. The nanophase ZnO products were al

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20

Pisarska, Joanna, and Wojciech Pisarski. "Replacement of glass-former B2O3 by GeO2 in amorphous host evidenced by optical methods." Photonics Letters of Poland 9, no. 4 (2017): 113. http://dx.doi.org/10.4302/plp.v9i4.790.

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Two completely different glass-host matrices containing lead, i.e. borate and germanate glasses doped with erbium were studied. Replacement of glass-former B2O3 by GeO2 in amorphous host was evidenced by optical methods. The luminescence decay from the 4I13/2 upper laser state of Er3+ ions is relatively short, whereas up-converted emission signal is reduced definitely in borate glass containing lead due to its high B-O stretching vibrations. The results indicate that germanate glasses containing lead are promising for near-infrared luminescence and up-conversion applications. Full Text: PDF Re

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21

Liu, Wei, Qi Sun, Ming Yan, et al. "BaCaLu2F10:Ln3+ (Ln = Eu, Dy, Tb, Sm, Yb/Er, Yb/Ho) spheres: ionic liquid-based synthesis and luminescence properties." CrystEngComm 20, no. 40 (2018): 6173–82. http://dx.doi.org/10.1039/c8ce01080c.

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Alkaline earth metal rare earth fluoride BaCaLu<sub>2</sub>F<sub>10</sub>:Ln<sup>3+</sup> (Ln = Eu, Dy, Tb, Sm, Yb/Er, Yb/Ho) submicrospheres with uniform morphology and size were synthesized via a facile ionic liquid-based hydrothermal route. The down- and up-conversion luminescence has been investigated.

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22

Godlewski, M., K. Świa̧tek, A. Suchocki, and J. M. Langer. "Excitonic mechanism of luminescence excitation of rare-earths and transition metals in solids." Journal of Luminescence 48-49 (January 1991): 23–28. http://dx.doi.org/10.1016/0022-2313(91)90071-3.

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23

Ohtake, Toshihito, Satoshi Hijii, Noriyuki Sonoyama, and Tadayoshi Sakata. "Electrochemical luminescence of n-type ZnO semiconductor electrodes doped with rare earth metals under the anodic polarization." Applied Surface Science 253, no. 4 (2006): 1753–57. http://dx.doi.org/10.1016/j.apsusc.2006.03.008.

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24

Baranovskaya, V. B., Yu A. Karpov, K. V. Petrova, and N. A. Korotkova. "Topical trends in the application of rare-earth metals and their compounds in the production of magnetic and luminescent materials." Izvestiya Vuzov. Tsvetnaya Metallurgiya (Universities' Proceedings Non-Ferrous Metallurgy), no. 6 (December 16, 2020): 4–23. http://dx.doi.org/10.17073/0021-3438-2020-6-4-23.

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This review is devoted to the review of current trends in the use of rare-earth metals (REM) in two major scientific and technical fields – the production of magnetic and luminescent materials. The reviews show that it is REM that gives this product unique properties. The information on the content of matrix and alloying components, their influence on achieving the required characteristics of the most popular magnetic materials is systematized. The prospects of new combinations of rare-earth metals in the further progress of the production of magnetic materials for various purposes are shown.

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25

Etz, Edgar S., Wilbur S. Hurst, Steven J. Choquette, and Douglas H. Blackburn. "Chromium-Doped Luminescent Glasses for Raman Intensity Calibration with 785 nm Laser Excitation." Microscopy and Microanalysis 7, S2 (2001): 160–61. http://dx.doi.org/10.1017/s1431927600026878.

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In work reported previously we, and the McCreery Group at Ohio State University, have proposed the use of glass luminescence standards for the calibration of the Raman spectral intensity. We now have a program underway that is directed at the development of such secondary standards for the calibration of the Raman instrument response function. The first Raman intensity standard to be certified and issued by NIST this year will be for the relative intensity calibration of Raman spectra excited at 785 nm. in general, for any laser excitation wavelength, the calibration procedure is based on the

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26

Wang, Jun, Haishui Wang, Fengyi Liu, Lianshe Fu, and Hongjie Zhang. "LB films of 2-n-heptadecanoylbenzoic-rare earth and their luminescence properties." Synthetic Metals 139, no. 1 (2003): 163–67. http://dx.doi.org/10.1016/s0379-6779(03)00123-1.

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27

Yan, B., and J. Y. You. "In-situ composition and luminescence of rare earth coordination polymers/silica/PEG hybrid materials." Inorganic Materials 42, no. 9 (2006): 1046–49. http://dx.doi.org/10.1134/s0020168506090214.

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28

Sekhar, H., G. Trivikrama Rao, P. Harshavardhan Reddy, and D. Narayana Rao. "Preparation, structural and its enhanced green upconversion luminescence in rare-earth doped CdMnS nanopowders." Journal of Alloys and Compounds 562 (June 2013): 38–42. http://dx.doi.org/10.1016/j.jallcom.2013.01.194.

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29

Mar’ina, Ul’ana A., Viktor A. Vorob’ev, and Alexandr P. Mar’in. "CaSnO 3: Yb 3+, Er 3+, Ho 3+ system synthesis and study of its luminescence under IR excitation." Modern Electronic Materials 4, no. 2 (2018): 71–75. http://dx.doi.org/10.3897/j.moem.4.2.38545.

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Solid state synthesis of Perovskite-like calcium stannate structure activated with three rare-Earth metal ions Yb3+,Er3+,Но3+ has been studied. The formation of the CaSnO3 : Yb3+,Er3+,Но3+ luminescent structure requires the following synthesis conditions: anneal temperature 1250 °C and duration at least 18 h. The luminescent properties of the specimens have been studied under 960 nm semiconductor diode laser excitation. The luminescence spectra contain bands in the visible and IR spectral regions. Yb3+ ions have been shown to act predominantly as sensibilizers capable of transferring part of a

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30

Demakov, Pavel A., Alexey A. Ryadun, Pavel V. Dorovatovskii, et al. "Intense multi-colored luminescence in a series of rare-earth metal–organic frameworks with aliphatic linkers." Dalton Transactions 50, no. 34 (2021): 11899–908. http://dx.doi.org/10.1039/d1dt00872b.

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31

Kolesnik, Stefaniia S., Viktor G. Nosov, Ilya E. Kolesnikov, et al. "Ultrasound-Assisted Synthesis of Luminescent Micro- and Nanocrystalline Eu-Based MOFs as Luminescent Probes for Heavy Metal Ions." Nanomaterials 11, no. 9 (2021): 2448. http://dx.doi.org/10.3390/nano11092448.

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The luminescent coarse-, micro- and nanocrystalline europium(III) terephthalate tetrahydrate (Eu2bdc3·4H2O) metal-organic frameworks were synthesized by the ultrasound-assisted wet-chemical method. Electron micrographs show that the europium(III) terephthalate microparticles are 7 μm long leaf-like plates. According to the dynamic light scattering technique, the average size of the Eu2bdc3·4H2O nanoparticles is equal to about 8 ± 2 nm. Thereby, the reported Eu2bdc3·4H2O nanoparticles are the smallest nanosized rare-earth-based MOF crystals, to the best of our knowledge. The synthesized materia

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32

Pang, Xie Guan, Tien Yew Eeu, Pau Ming Leong, Wan Nurulhuda Wan Shamsuri, and Rosli Hussin. "Structural and Luminescence Study of Rare Earth and Transition Metal Ions Doped Lead Zinc Borophosphate Glasses." Advanced Materials Research 895 (February 2014): 280–83. http://dx.doi.org/10.4028/www.scientific.net/amr.895.280.

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A series of glasses with composition of xPbO-(50-x)ZnO-yB2O3-(50-y)P2O5 with 0 x 50 mol% and 10 y 20 mol% were prepared by melt quenching technique, with 30 minutes pre-heating and 10 minutes for melting. The structural properties of prepared samples were studied using Fourier Transform-Infrared spectroscopy. The glasses were mainly based on PO2, BOP and BO3 unit. In order to obtain luminescence properties, another series of sample at composition 20PbO-30ZnO-10B2O3-40P2O5 doped with Fe2+, Ti2+, Y2+ and Nd2+ were prepared. These samples were investigated using Photoluminescence Spectroscopy wit

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33

Arakawa, Tsuyoshi, Akiko Muraki, and Mizuki Hashimoto. "Determination of heavy metal ions based on quenching of the rare earth luminescence." Sensors and Actuators B: Chemical 108, no. 1-2 (2005): 832–35. http://dx.doi.org/10.1016/j.snb.2004.11.060.

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34

Hong, Byung-Chul, and Katsuyasu Kawano. "Luminescence studies of the rare earth ions-doped CaF2 and MgF2 films for wavelength conversion." Journal of Alloys and Compounds 408-412 (February 2006): 838–41. http://dx.doi.org/10.1016/j.jallcom.2005.01.133.

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35

Ivanovskikh, K. V., V. A. Pustovarov, A. Smirnov, and B. V. Shulgin. "Excitation of inter- and intraconfigurational luminescence of trivalent rare earth ions in strontium fluoride crystals." Journal of Alloys and Compounds 451, no. 1-2 (2008): 65–67. http://dx.doi.org/10.1016/j.jallcom.2007.04.095.

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36

Zhang, Jia, Guibin Chen, Zhangyin Zhai, Huabao Chen, and Yamei Zhang. "Optical temperature sensing using upconversion luminescence in rare-earth ions doped Ca2Gd8(SiO4)6O2 phosphors." Journal of Alloys and Compounds 771 (January 2019): 838–46. http://dx.doi.org/10.1016/j.jallcom.2018.09.022.

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37

Thompson, L. C., J. R. Marvin, and N. C. Bettenberg. "Absorption spectra of solid rare earth complexes obtained from the inner filter effect on luminescence." Journal of Alloys and Compounds 180, no. 1-2 (1992): 229–34. http://dx.doi.org/10.1016/0925-8388(92)90385-m.

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38

Lin, Cun, Takashi Kadono, Kazuharu Yoshizuka, Takuya Furuichi, and Tomonori Kawano. "Effects of Fifteen Rare-Earth Metals on Ca2+ Influx in Tobacco Cells." Zeitschrift für Naturforschung C 61, no. 1-2 (2006): 74–80. http://dx.doi.org/10.1515/znc-2006-1-214.

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Abstract Effects of naturally existing rare-earth metals (REMs; atomic numbers, 39, 57D60, 62D71; Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu), added as chloride salts, on Ca2+ influx induced by two different stimuli, namely hypoosmotic shock and hydrogen peroxide, were examined in a suspension-cultured transgenic cell line of BY-2 tobacco cells expressing aequorin, a Ca2+-sensitive luminescent protein in cytosol. Most REM salts used here showed inhibitory effect against Ca2+ influx. Especially NdCl3, SmCl3, EuCl3, GdCl3 and TbCl3 showed the most robust inhibitory action. In c

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39

Yang, Ping, Mengkai Lü, Dong Xü, Duolong Yuan, and Guangjun Zhou. "ZnS nanocrystals co-activated by transition metals and rare-earth metals—a new class of luminescent materials." Journal of Luminescence 93, no. 2 (2001): 101–5. http://dx.doi.org/10.1016/s0022-2313(01)00186-7.

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40

Wang, Qi, Jinsheng Liao, Liyun Kong, et al. "Luminescence properties of a non-rare-earth doped oxyfluoride LiAl4O6F:Mn4+ red phosphor for solid-state lighting." Journal of Alloys and Compounds 772 (January 2019): 499–506. http://dx.doi.org/10.1016/j.jallcom.2018.09.199.

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41

Vassilyeva, Olga Yu, Elena A. Buvaylo, Yevheniia V. Lobko, Rostyslav P. Linnik, Vladimir N. Kokozay, and Brian W. Skelton. "Organic–inorganic hybrid tetrachlorocadmates as promising fluorescent agents for cross-linked polyurethanes: synthesis, crystal structures and extended performance analysis." RSC Advances 11, no. 13 (2021): 7713–22. http://dx.doi.org/10.1039/d0ra10787e.

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Hybrid salts made of imidazo[1,5-a]pyridinium-based cations with easily tunable electronic structures, and halometallate anions that do not include any rare-earth or noble metals were used to fabricate flexible luminescent CPU films.

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42

Shamsutdinova, M. H., N. R. Tashligov, and L. E. Ilyasova. "SYNTHESIS, STRUCTUREAND PROPERTIES OF COMPLEX COMPOUNDS OF LANTANOIDES WITH 2-(METHYLAMINO) BENZOIC ACID." National Association of Scientists 3, no. 28(55) (2020): 46–49. http://dx.doi.org/10.31618/nas.2413-5291.2020.3.55.224.

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Synthesis of complex compounds of 2-(methylamino) benzoic acid (L) with ions of samarium (III), europium (III), terbium (III), gadolinium (III) and dysprosium (III). According to elemental analysis and thermogravimetry, the complexes obtained are hydrates of the composition LnL3 • nH2O, where n = 1-5. The area of their thermal stability ranges from 100 ° C to 240 ° C. Electronic and infrared absorptionspectra of the ligand and complexeswith rare-earth metal ions were measured. According to the IR spectra, coordination of the ligand with the metal ion is carried out on the carboxyl group. The c

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43

Scheurell, Kerstin, and Erhard Kemnitz. "Fluorolytic Sol–Gel Synthesis of Nanometal Fluorides: Accessing New Materials for Optical Applications." Inorganics 6, no. 4 (2018): 128. http://dx.doi.org/10.3390/inorganics6040128.

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The potential of fluorolytic sol–gel synthesis for a wide variety of applications in the field of optical materials is reviewed. Based on the fluorolytic sol–gel synthesis of nanometal fluorides, sols of complex fluorometalates have become available that exhibit superior optical properties over known classical binary metal fluorides as, for instance, magnesium fluoride, calcium fluoride, or strontium fluoride, respectively. The synthesis of transparent sols of magnesium fluoroaluminates of the general composition MgxAlFy, and fluoroperovskites, [K1−xNax]MgF3, is reported. Antireflective coatin

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44

Xiao, Xiu-Zhen, and Bing Yan. "Luminescence of rare earth ions activated YNb0.5M0.5O4 (M=P, V) phosphors by chemical co-precipitation composing hybrid precursors." Journal of Alloys and Compounds 448, no. 1-2 (2008): 298–302. http://dx.doi.org/10.1016/j.jallcom.2006.10.088.

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45

Pisarski, W. A., G. Dominiak-Dzik, W. Ryba-Romanowski, and J. Pisarska. "Role of PbO substitution by PbF2 on structural behavior and luminescence of rare earth-doped lead borate glass." Journal of Alloys and Compounds 451, no. 1-2 (2008): 220–22. http://dx.doi.org/10.1016/j.jallcom.2007.04.182.

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Cesaria, Maura, and Baldassare Di Bartolo. "Nanophosphors-Based White Light Sources." Nanomaterials 9, no. 7 (2019): 1048. http://dx.doi.org/10.3390/nano9071048.

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Miniaturization requests and progress in nanofabrication are prompting worldwide interest in nanophosphors as white-emission mercury-free lighting sources. By comparison with their bulk counterparts, nanophosphors exhibit reduced concentration quenching effects and a great potential to enhance luminescence efficiency and tunability. In this paper, the physics of the nanophoshors is overviewed with a focus on the impact of spatial confinement and surface-to-volume ratio on the luminescence issue, as well as rare earth-activated multicolor emission for white light (WL) output. In this respect, t

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Shamsutdinova, Medina Humaidovna, Zara Sultanovna Ilkhaeva, and Alet Ilyasovna Khasaeva. "SYNTHESIS, STRUCTURE AND PROPERTIES OF COMPLEX COMPOUNDS OF ANTHANOIDS WITH 4 - [(3,4-DIMETOXYBENZYL) AMINO] BENZOIC ACID." EurasianUnionScientists 6, no. 7(76) (2020): 28–31. http://dx.doi.org/10.31618/esu.2413-9335.2020.6.76.940.

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The synthesis of complex compounds of 4 - [(3,4-dimethoxybenzyl) amino] benzoic acid (HL) with ions of samarium (III), europium (III), terbium (III), gadolinium (III) and dysprosium (III). According to the data of elemental analysis and thermogravimetry, the obtained complexes are hydrates of the composition LnL3 · nH2O, where n = 0-2. The area of their thermal stability is in the range from 100 ° С to 150 ° С. Electronic and infrared absorption spectra of the ligand and complexes with rare-earth metal ions have been measured. According to the IR spectra, the coordination of the ligand with th

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Shamsutdinova, M., and F. Dzhebirkhanova. "COMPLEX COMPOUNDS OF LANTANOIDS WITH 4 - [(2,4-DIMETOXYBENZYL) AMINO] BENZOIC ACID." National Association of Scientists 2, no. 68 (2021): 57–60. http://dx.doi.org/10.31618/nas.2413-5291.2021.2.68.454.

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The synthesis of complex compounds of 4 - [(2,4-dimethoxybenzyl) amino] benzoic acid (HL) with ions of samarium (III), europium (III), terbium (III), gadolinium (III) and dysprosium (III). According to the data of elemental analysis and thermogravimetry, the obtained complexes are hydrates of the composition LnL3 · nH2O, where n = 0-2. The area of their thermal stability is in the range from 100 ° С to 150 ° С. Electronic and infrared absorption spectra of the ligand and complexes with rare-earth metal ions have been measured. According to the IR spectra, the coordination of the ligand with th

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Porkalai, V., B. Sathya, D. Benny Anburaj, G. Nedunchezhian, S. Joshua Gnanamuthu, and R. Meenambika. "Photoluminescences properties of lanthanum-silver co-doped ZnO nano particles." Modern Electronic Materials 4, no. 4 (2018): 135–41. http://dx.doi.org/10.3897/j.moem.4.4.35063.

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Recently, transition metal (TM) and rare earth ion doped II–VI semiconductor nanoparticles have received much attention because such doping can modify and improve optical properties of II–VI semiconductor nanoparticles by large amount. In this study, undoped, La doped and La+Ag co-doped ZnO nano particles have been successfully synthesized by sol-gel method using the mixture of Zinc acetate dihydrate and ethanol solution. The powders were calcinated at 600 °C for 2 h. The effect of lanthanum and lanthanum-silver incorporation on the structure, morphology, optical and electrical conductivity we

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Moska, Piotr, Wojciech Stankowski, and Grzegorz Poręba. "Optically stimulated luminescence techniques applied to the dating of the fall of meteorites in Morasko." Geochronometria 45, no. 1 (2018): 74–81. http://dx.doi.org/10.1515/geochr-2015-0088.

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Abstract Geological materials used for luminescence dating and associated with the fall of meteorites on the Earth’s surface are extremely rare. The Morasko region has gained fame over the past 100 years because of a cosmic catastrophe which took place there. After thousands of years, the remains of a large metal meteorite which fell in this area have been found. In this article, we would like to state whether it is possible, using luminescence methods, to determine the moment when the iron meteorite fell on the surface of the Earth. The material which was analysed consisted of meteorite crust

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