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Готові списки джерел за темами / Nanocrystals of CdTe / Статті в журналах

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Статті в журналах з теми "Nanocrystals of CdTe"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Zhu, Jian Chun, Li Hua Gan, Ming Xian Liu, et al. "Fabrication and Photoelectric Properties of CdTe/TiO₂ Nanocrystals Multilayer." Advanced Materials Research 79-82 (August 2009): 481–84. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.481.

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In this paper, we report the fabrication and photoelectric properties of CdTe/TiO2 nanocrystal multilayer. Negatively charged CdTe nanocrystal hydrosols were synthesized in the aqueous phase with 3-mercaptopropionic acid as a surface modifier. The characterization of transmission electron microscopy (TEM) and UV-visible absorption spectrum indicates the resultant CdTe nanocrystal hydrosols are monodisperse and have a very narrow size distribution with a mean diameter of about 5 nm. Clear TiO2 aqueous colloidal nanocrystals with positive surface charges were prepared by using tetrabutyl titanat

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2

Gutiérrez-Lazos, C. D., M. Ortega-López, E. Rosendo-Andrés, et al. "Highly Luminescent CdTe Nanocrystals Synthesized in Aqueous Solution and Self-Assembled on Polyelectrolyte Multilayers." Materials Science Forum 636-637 (January 2010): 374–79. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.374.

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CdTe nanocrystals have been synthesized in aqueous solution at 92oC under open-air conditions. During the reaction, aliquots of the samples were taken at different growth times and used to obtain their UV-Vis absorbance and photoluminescence spectra in order to estimate the nanocrystal size. The absorption peaks are located around 459 nm for 1 h, 478 nm for 2 h, 491 nm for 4 h, 532 nm for 7 h and 610 nm for 94 h of growth time. The mean nanocrystal size for these samples is 2 nm, 2.2 nm, 2.3 nm, 2.6 nm and 3.4 nm, respectively, according to the theoretical calculations of 1s1/2 – 1s3/2 exciton

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3

Wang, Ying. "Luminescent CdTe and CdSe Semiconductor Nanocrystals: Preparation, Optical Properties and Applications." Journal of Nanoscience and Nanotechnology 8, no. 3 (2008): 1068–91. http://dx.doi.org/10.1166/jnn.2008.18156.

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The novel optical and electrical properties of luminescent semiconductor nanocrystals are appealing for ultrasensitive multiplexing and multicolor applications in a variety of fields, such as biotechnology, nanoscale electronics, and opto-electronics. Luminescent CdSe and CdTe nanocrystals are archetypes for this dynamic research area and have gained interest from diverse research communities. In this review, we first describe the advances in preparation of size- and shape-controlled CdSe and CdTe semiconductor nanocrystals with the organometallic approach. This article gives particular focus

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4

Kadim, Akeel M. "White Light Generation from Emissive Hybrid Nanocrystals CdSe/CdTe/CdS Core/Shell/Shell System." Nano Hybrids and Composites 27 (November 2019): 1–10. http://dx.doi.org/10.4028/www.scientific.net/nhc.27.1.

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New nanocrystals (NCs) were engineered with a core/shell/shell system consisting of CdSe core/ CdTe shell/ CdS shell. The white light generation mechanism was described depending on mixing colors from the illuminated CdSe/CdTe/CdS core/shell/shell nanocrystals. The color mixed in CdSe/CdTe/CdS core/shell/shell NCs system were used to generate extreme white light when illuminated by InGaN/GaN UV LED (λ=360 nm) the core/shell/shell NCs system tuned the chromaticity coordinates to (0.332, 0.340) and increased the intensity of the emitted white light. The synthesis of the CdSe/CdTe/CdS core/shell/

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5

Deka, Sasanka, Karol Miszta, Dirk Dorfs, Alessandro Genovese, Giovanni Bertoni, and Liberato Manna. "Octapod-Shaped Colloidal Nanocrystals of Cadmium Chalcogenides via "One-Pot" Cation Exchange and Seeded Growth." Nano Letters 10, no. 9 (2010): 3770–76. https://doi.org/10.1021/nl102539a.

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Accepted Version of the publication: Nano Lett. 2010, 10, 9, 3770–3776. Publication Date: August 11, 2010. https://doi.org/10.1021/nl102539a © 2010 American Chemical Society. The growth behavior of cadmium chalcogenides (CdE = CdS, CdSe, and CdTe) on sphalerite Cu<sub>2−<em>x</em></sub>Se nanocrystals (size range 10−15 nm) is studied. Due to the capability of Cu<sub>2−<em>x</em></sub>Se to undergo a fast and quantitative cation exchange reaction in the presence of excessive Cd<sup>2+</sup> ions, no Cu<sub>2−<em>x</em></sub>Se/CdE heterostructures are obt

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6

Dworak, L., S. Roth, M. P. Scheffer, A. S. Frangakis, and J. Wachtveitl. "A thin CdSe shell boosts the electron transfer from CdTe quantum dots to methylene blue." Nanoscale 10, no. 4 (2018): 2162–69. http://dx.doi.org/10.1039/c7nr08287h.

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7

Xie, Ya, Qiongxuan Tan, Zhitao Zhang, et al. "Improving performance in CdTe/CdSe nanocrystals solar cells by using bulk nano-heterojunctions." Journal of Materials Chemistry C 4, no. 27 (2016): 6483–91. http://dx.doi.org/10.1039/c6tc01571a.

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8

Tian, Yu Chen, Li Hua Gan, Ming Xian Liu, et al. "Self-Assembly of PPV/CdTe Nanocrystal Complex for Photovoltaic Device." Advanced Materials Research 79-82 (August 2009): 485–88. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.485.

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This work focuses on studying a novel polymer/nanocrystal multilayer for the fabrication of donor and accepter typed photovoltaic device. Highly luminescent anionic CdTe nanocrystals were prepared by aqueous synthesis method using 3-mercaptopropionic acid as stabilizer. The resultant CdTe served as electron acceptor and poly(p-phenylene vinylene) (PPV) was used as electron donor. Through the electrostatic interactions between cationic PPV precursor poly(p-xylene tetrahydrothiophenium chloride) and anionic poly(sodium4-styrenesulfonate) (PSS), PPV/PSS complex was fabricated on the surface of pr

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9

Slyusarenko, Nina, Marina Gerasimova, Alexei Plotnikov, Nikolai Gaponik, and Evgenia Slyusareva. "Photoluminescence properties of self-assembled chitosan-based composites containing semiconductor nanocrystals." Physical Chemistry Chemical Physics 21, no. 9 (2019): 4831–38. http://dx.doi.org/10.1039/c8cp07051b.

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The photoluminescence (PL) properties of composites obtained by embedding green-emitting semiconductor nanocrystals (NCs) of two different types (thiol-capped CdTe and CdSe/ZnS) into chitosan-based biopolymer particles were investigated.

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10

QI, XIAO-YING, KAN-YI PU, CHUN FANG, et al. "CADMIUM TELLURIDE NANOCRYSTALS: SYNTHESIS, GROWTH MODE AND EFFECT OF REACTION TEMPERATURE ON CRYSTAL STRUCTURES." Nano 03, no. 02 (2008): 109–15. http://dx.doi.org/10.1142/s1793292008000873.

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A series of cadmium telluride (CdTe) nanocrystals were synthesized by a modified organometallic synthesis method at various reaction temperatures ranging from 130 to 250°C. In this method, octadecylamine (ODA) was introduced as an additional coordinating component to the mixture of trioctylphosphine oxide (TOPO) and trioctylphosphine (TOP). CdO was used as a precursor. The prepared CdTe nanocrystals were studied by the absorption and emission spectra as well as the powder X-ray diffraction (XRD) patterns. The result shows that besides the traditional continuous-growth mode observed frequently

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11

BÜCKING, WENDELIN, OLIVER EHLERT, JÜRGEN RIEGLER, CHRISTIAN RETTENMEIER, ALEXEI MERKOULOV, and THOMAS NANN. "ISOTACHOPHORETIC MEASUREMENTS OF LUMINESCENT SEMICONDUCTOR NANOCRYSTALS." Biophysical Reviews and Letters 02, no. 01 (2007): 99–108. http://dx.doi.org/10.1142/s1793048007000453.

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Luminescent semiconductor nanocrystals of CdTe and CdSe were derivatised by mercaptocarboxylic acids. A direct synthesis in the solution of the ligand and a post-synthesis ligand exchange method was used. The two methods were compared and evaluated by isotachophoresis. The electrophoretic mobility as well as the colloidal stability and the coverage with the ligand, were determined. An alternative method for the concentration estimation of nanocrystals by means of isotachophoresis was introduced.

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12

Dirin, D. N., M. S. Sokolikova, A. M. Gaskov, and R. B. Vasilev. "Extinction and luminescence coefficients of CdSe/CdTe, CdTe/CdSe, and CdTe/CdS heterostructures based on colloidal CdSe and CdTe nanocrystals." Journal of Optical Technology 78, no. 11 (2011): 693. http://dx.doi.org/10.1364/jot.78.000693.

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13

Hou, Mingyue, Zhaohua Zhou, Ao Xu, et al. "Synthesis of Group II-VI Semiconductor Nanocrystals via Phosphine Free Method and Their Application in Solution Processed Photovoltaic Devices." Nanomaterials 11, no. 8 (2021): 2071. http://dx.doi.org/10.3390/nano11082071.

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Solution-processed CdTe semiconductor nanocrystals (NCs) have exhibited astonishing potential in fabricating low-cost, low materials consumption and highly efficient photovoltaic devices. However, most of the conventional CdTe NCs reported are synthesized through high temperature microemulsion method with high toxic trioctylphosphine tellurite (TOP-Te) or tributylphosphine tellurite (TBP-Te) as tellurium precursor. These hazardous substances used in the fabrication process of CdTe NCs are drawing them back from further application. Herein, we report a phosphine-free method for synthesizing gro

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14

Jin, Xiaoping, Jürgen Parisi, and Joanna Kolny-Olesiak. "Shape Control of CdTe Nanocrystals: Influence of the Solvent Composition and Ligand Effects." Journal of Nanoparticles 2013 (February 6, 2013): 1–7. http://dx.doi.org/10.1155/2013/243831.

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CdTe nanocrystals were synthesized by the hot-injection method with a mixture of oleylamine and octadecene as a solvent. The influence of the composition of the solvent and of the injection solution on the shape of CdTe nanoparticles was investigated. Various shapes of CdTe nanocrystals, such as nanodots, nanorods, multipods, and nanowires, could be obtained by changing the reaction conditions. Tuning the reactivity of both the cadmium and the tellurium precursors at the same time was found to be the main reason for the shape control of CdTe nanocrystals in this reaction system. The reactivity

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15

Gong, Ke, Youhong Zeng, and David F. Kelley. "Extinction Coefficients, Oscillator Strengths, and Radiative Lifetimes of CdSe, CdTe, and CdTe/CdSe Nanocrystals." Journal of Physical Chemistry C 117, no. 39 (2013): 20268–79. http://dx.doi.org/10.1021/jp4065449.

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16

Бойчук, В. І., Р. Я. Лешко, and Д. С. Карпин. "SURFACE STATES IN THE SPHERICAL NANOCRYSTALS CdSe, CdTe." Sensor Electronics and Microsystem Technologies 15, no. 1 (2018): 5–16. http://dx.doi.org/10.18524/1815-7459.2018.1.126342.

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17

Tynkevych, O. O. "Introduction of transition metal impurities as a method of tuning the band structure and optical properties of CdTe nanocrystals." Chernivtsi University Scientific Herald. Chemistry 828 (2021): 7–18. http://dx.doi.org/10.31861/chem-2021-828-1.

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A general review of the introduction of transition metal impurities into the structure of CdTe nanocrystals is made. The main methods of nanocomposite synthesis and the influence of synthesis conditions on the formation and properties of nanocomposites are considered. The influence of the introduction of transition metal impurities on their band structure and optical properties of CdTe nanocrystals was evaluated.

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18

Martin-Trasanco, Rudy, Hilda Esparza-Ponce, Pedro Ortiz та ін. "In-Situ Preparation of CdTe Quantum Dots Capped with a β-Cyclodextrin-Epichlorohydrin Polymer: Polymer Influence on the Nanocrystal’s Optical Properties". Nanomaterials 8, № 11 (2018): 948. http://dx.doi.org/10.3390/nano8110948.

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β-Cyclodextrin (βCD), the less water soluble of the cyclodextrins, has been used as a capping agent in the preparation of semiconductor nanocrystals or quantum dots (QDs). Nevertheless, no reports have been found in the use of the highly water-soluble polymer of this, prepared by the crosslinking of the βCD units with epichlorohydrin in basic medium (βCDP). This polymer, besides to overcome the low solubility of the βCD, increases the inclusion constant of the guest; two parameters that deserve its use as capping agent, instead of the native cyclodextrin. In the present manuscript, we afforded

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19

Hoppe, Kathrin, Ekkehard Geidel, Horst Weller, and Alexander Eychmüller. "Covalently bound CdTe nanocrystals." Physical Chemistry Chemical Physics 4, no. 10 (2002): 1704–6. http://dx.doi.org/10.1039/b201219g.

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20

Wuister, Sander F., Floris van Driel, and Andries Meijerink. "Luminescence of CdTe nanocrystals." Journal of Luminescence 102-103 (May 2003): 327–32. http://dx.doi.org/10.1016/s0022-2313(02)00520-3.

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21

Yan, Yueran, Gang Chen, and P. Gregory Van Patten. "Ultrafast Exciton Dynamics in CdTe Nanocrystals and Core/Shell CdTe/CdS Nanocrystals." Journal of Physical Chemistry C 115, no. 46 (2011): 22717–28. http://dx.doi.org/10.1021/jp204420q.

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22

Dzhagan, Volodymyr, Nazar Mazur, Olga Kapush, et al. "Core and Shell Contributions to the Phonon Spectra of CdTe/CdS Quantum Dots." Nanomaterials 13, no. 5 (2023): 921. http://dx.doi.org/10.3390/nano13050921.

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The parameters of the shell and interface in semiconductor core/shell nanocrystals (NCs) are determinant for their optical properties and charge transfer but are challenging to be studied. Raman spectroscopy was shown earlier to be a suitable informative probe of the core/shell structure. Here, we report the results of a spectroscopic study of CdTe NCs synthesized by a facile route in water, using thioglycolic acid (TGA) as a stabilizer. Both core-level X-ray photoelectron (XPS) and vibrational (Raman and infrared) spectra show that using thiol during the synthesis results in the formation of

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23

Gutiérrez-Lazos, Claudio Davet, Mauricio Ortega-López, Manuel A. Pérez-Guzmán, et al. "Optical and structural characterization of oleic acid-stabilized CdTe nanocrystals for solution thin film processing." Beilstein Journal of Nanotechnology 5 (June 20, 2014): 881–86. http://dx.doi.org/10.3762/bjnano.5.100.

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This work presents results of the optical and structural characterization of oleic acid-stabilized cadmium telluride nanocrystals (CdTe-NC) synthesized by an organometallic route. After being cleaned, the CdTe-NC were dispersed in toluene to obtain an ink-like dispersion, which was drop-cast on glass substrate to deposit a thin film. The CdTe-NC colloidal dispersion as well as the CdTe drop-cast thin films were characterized with regard to the optical and structural properties. TEM analysis indicates that the CdTe-NC have a nearly spherical shape (3.5 nm as mean size). Electron diffraction and

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24

Wang, Chao, Qiang Ma, and Xingguang Su. "Synthesis of CdTe Nanocrystals with Mercaptosuccinic Acid as Stabilizer." Journal of Nanoscience and Nanotechnology 8, no. 9 (2008): 4408–14. http://dx.doi.org/10.1166/jnn.2008.269.

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Water soluble high quality CdTe nanocrystals (NCs) with mercaptosuccinic acid (MSA) as stabilizer are prepared by refluxing and hydrothermal synthesis in this paper. The MSA stabilizer which comprises both thioglycolic acid (TGA)-like and 3-mercaptopropionic acid (MPA)-like moieties can accelerate the whole growth process of CdTe NCs comparing with TGA-like or MPA-like stabilizer. It takes only 5 min and 2 hours to obtain green emitting (luminescence maximum at 526 nm) and red emitting (luminescence maximum at ∼650 nm) from CdTe NCs, respectively. In this study, the influences of the ratios of

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25

Xu, Ao, Qichuan Huang, Kaiying Luo, et al. "Efficient Nanocrystal Photovoltaics with PTAA as Hole Transport Layer." Nanomaterials 12, no. 17 (2022): 3067. http://dx.doi.org/10.3390/nano12173067.

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The power conversion efficiency (PCE) of solution-processed CdTe nanocrystals (NCs) solar cells has been significantly promoted in recent years due to the optimization of device design by advanced interface engineering techniques. However, further development of CdTe NC solar cells is still limited by the low open-circuit voltage (Voc) (mostly in range of 0.5–0.7 V), which is mainly attributed to the charge recombination at the CdTe/electrode interface. Herein, we demonstrate a high-efficiency CdTe NCs solar cell by using organic polymer poly[bis(4–phenyl)(2,4,6–trimethylphenyl)amine] (PTAA) a

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26

Yang, Yongan Andrew, Huimeng Wu, Kathryn R. Williams, and Y. Charles Cao. "Synthesis of CdSe and CdTe Nanocrystals without Precursor Injection." Angewandte Chemie 117, no. 41 (2005): 6870–73. http://dx.doi.org/10.1002/ange.200502279.

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27

Yang, Yongan Andrew, Huimeng Wu, Kathryn R. Williams, and Y. Charles Cao. "Synthesis of CdSe and CdTe Nanocrystals without Precursor Injection." Angewandte Chemie International Edition 44, no. 41 (2005): 6712–15. http://dx.doi.org/10.1002/anie.200502279.

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28

Dubavik, Aliaksei, Vladimir Lesnyak, Wladimir Thiessen, Nikolai Gaponik, Thomas Wolff, and Alexander Eychmüller. "Synthesis of Amphiphilic CdTe Nanocrystals." Journal of Physical Chemistry C 113, no. 12 (2009): 4748–50. http://dx.doi.org/10.1021/jp900140y.

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29

Ulusoy, Mehriban, Johanna-Gabriela Walter, Antonina Lavrentieva, et al. "One-pot aqueous synthesis of highly strained CdTe/CdS/ZnS nanocrystals and their interactions with cells." RSC Advances 5, no. 10 (2015): 7485–94. http://dx.doi.org/10.1039/c4ra13386b.

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An aqueous approach enhancing the properties of small-core/thick-shell CdTe/CdS nanocrystals by deposition of an outer ZnS shell was developed. The as-prepared nanocrystals were conjugated with aptamer for the targeted imaging of cancer cells.

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30

Wang, Mei Ping, Jin Hui Lin, and Xiao Li Hao. "Preparation and Characterization of CdTe/SiO₂ Composite." Advanced Materials Research 233-235 (May 2011): 1946–49. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.1946.

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TGA- stabilized CdTe nanocrystals (NCs) were prepared using sodium tellurite as tellurium source, which avoids the cumbersome processes associated with H2Te or NaHTe sources. Fluorescent CdTe/SiO2composites were prepared by a sol–gel method without the exchange of surface ligands. The composites were characterized with TEM and fluorescence spectrophotometer and investigated their stability in phosphate-buffered saline (PBS) buffer. CdTe NCs were loaded into the core of silica spheres during the formation of composite spheres. In contrast to CdTe NCs in aqueous solutions, CdTe NCs in the compos

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31

Budzulyak, S. I., V. M. Yermakov, O. A. Kapush, et al. "Photoluminescent Properties of CdTe Nanocrystals in Colloidal Solutions and Polymer Films." Фізика і хімія твердого тіла 17, no. 1 (2016): 60–64. http://dx.doi.org/10.15330/pcss.17.1.60-64.

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Using stabilizers and promoters we have obtained colloidal CdTe nanocrystals (NCs) in aqueous solutions. Incorporation of the CdTe NCs into polymer films has been fulfilled subsequently. It is shown that the use of vinyl acetate-acrylate copolymer as the matrix material for CdTe NC incorporation from colloidal solutions allows to get stable and nontoxic nanoheterogeneous film structures, which are characterized by satisfactory values of the photoluminescence quantum yield. Photoluminescence characteristics of the studied materials have been analyzed.

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32

Han, Ting-Ting, Hao Dong, Lu-Lu Ren, Ning Bao, Wenzhuo Wu, and Shou-Nian Ding. "Self-electrochemiluminescence of CdTe nanocrystals capped with 2-diethylaminoethanethiol." Chemical Communications 53, no. 39 (2017): 5388–91. http://dx.doi.org/10.1039/c7cc01955f.

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33

Liu, Yao, Ji Mei Zhang, Zhao Dai, and Jun Wei. "The Core-Shell CdTe@SiO₂ Particles Prepared via Reverse Microemulsion Method and their Fluorescence Properties." Advanced Materials Research 601 (December 2012): 7–11. http://dx.doi.org/10.4028/www.scientific.net/amr.601.7.

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High-quality CdTe nanocrystals capped by mercaptopropionic acid (MPA) were prepared in aqueous solution, and core-shell CdTe@SiO2 particles were prepared via reverse microemulsion method. The core-shell CdTe@SiO2 particles were fluorescent, monodispersed, and well-separated. The obtained samples were characterized by means of transmission electron microscope (TEM), ultraviolet-visible absorption spectrometry (UV-vis) and photoluminescence (PL) emission. The influence of ionic strength on the PL emission of uncoated CdTe and CdTe/SiO2 composite nanoparticles were investigated thoroughly. Due to

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34

Kadim, Akeel M. "Luminescence White Light from CdTe/ZnSe Core/Shell Nanocrystals System." Journal of Metastable and Nanocrystalline Materials 29 (August 2017): 17–24. http://dx.doi.org/10.4028/www.scientific.net/jmnm.29.17.

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The white light generation mechanism was explained depending on mixing colors from the illuminated CdTe/ZnSe core/shell nanocrystals. The color mixed in CdTe/ZnSe core/shell system were used to generate intense white light when illuminated by InGaN/GaN UV LED (λ=360 nm) the core/shell system tuned the chromaticity coordinates to (0.30, 0.32) and increased the intensity of the emitted white light. This improvement was attributed to the overlap of emission with the photoluminescence (PL) spectrum of CdTe/ZnSe core/shell which leads to a cold white light generation.

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35

Zakharov, R. V., V. V. Shorokhov, A. S. Trifonov, and R. B. Vasiliev. "The Transport of Electrons through Tetrapod-Shaped CdTe/CdSe Nanocrystals." Moscow University Physics Bulletin 73, no. 6 (2018): 659–68. http://dx.doi.org/10.3103/s0027134918060267.

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36

Washington II, Aaron L., and Geoffrey F. Strouse. "Microwave Synthesis of CdSe and CdTe Nanocrystals in Nonabsorbing Alkanes." Journal of the American Chemical Society 130, no. 28 (2008): 8916–22. http://dx.doi.org/10.1021/ja711115r.

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37

Gardner, Hannah C., Birju Patel, Cristina Bertoni, Diego E. Gallardo, and Steve Dunn. "Degradation of Photoluminescence in CdTe Nanoparticles Due to Cl₂ Contamination." Advanced Materials Research 31 (November 2007): 150–52. http://dx.doi.org/10.4028/www.scientific.net/amr.31.150.

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Nanostructured CdTe is proving a popular material for a variety of modern applications. Here, we report photoluminescent deterioration of CdTe due to Cl2 contamination. Cl2 gas was bubbled through a 2ml suspension of thioglycolic acid capped CdTe nanoparticles whilst photoluminescence was monitored. With the addition of only 0.02ml of Cl2 a loss of luminescence intensity was observed. Addition of 0.4ml of Cl2 resulted in a 70% loss of luminescence intensity, a 21nm shift in wavelength, and a large narrowing of the full-width-at-half-maximum. Cl2 attacks the Cd-S bond in the thiol capping layer

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Aboulaich, Abdelhay, Christophe Merlin, and Raphael Schneider. "A Comparative Study of Water Dispersible Orange-Emitting Mn-Doped ZnSe/ZnS and CdTe/CdS Core/Shell Quantum Dots." Journal of Nanotechnology in Diagnosis and Treatment 7 (June 2, 2021): 1–9. http://dx.doi.org/10.12974/2311-8792.2021.07.1.

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3-Mercaptopropionic acid (MPA)-capped Mn-doped ZnSe/ZnS and CdTe/CdS core/shell quantum dots (QDs) were prepared via a mild aqueous phase process. The synthesis conditions were adjusted to yield QDs with roughly similar nanocrystal average diameter and light emission wavelengths. X-ray powder diffraction, transmission electron microscopy and spectrofluorometry have been used to characterize the crystal structure and optical properties of the as-prepared QDs. Growth inhibition tests using E. coli bacterial cells were also carried out to assess the cytotoxicity of the dots and showed that core/s

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39

SHEN, QI-HUI, YAN LIU, XI YU, et al. "FORMATION OF II–VI SEMICONDUCTOR NANOCRYSTALS WITH TUNABLE VISIBLE EMISSION IN AQUEOUS SOLUTION PROMOTED BY HYDRAZINE." Nano 07, no. 06 (2012): 1250046. http://dx.doi.org/10.1142/s1793292012500464.

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II–VI Semiconductor nanocrystals (NCs) with tunable visible emission, such as CdS , CdSe and CdTe , were synthesized in aqueous solution using thiols as capping molecules. Hydrazine was found to promote the growth of NCs through a special mechanism. In only a few hours, the synthesis process was completed at room temperature. Under moderate conditions, the capping molecules not only changed the growth rate of NCs simply by varying the concentration, but also altered the spectral properties of NCs. The capping molecules with amino groups were propitious to the growth of CdS NCs, whereas the kin

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40

Liu, Ning, Zhi Min Yuan, Jie Yang, et al. "Preparation and Photoluminescence of Hybrid SiO₂-Coated CdTe Nanocrystals." Advanced Materials Research 306-307 (August 2011): 1194–97. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1194.

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Novel hybrid SiO2-coated CdTe core-shell nanocrystals (NCs) were fabricated by re-dispersing green-emitting CdTe NCs in a solution of Cd2+ions, thioglycolic acid (TGA), tetraethyl orthosilicate and ammonia with a sol-gel reaction at room temperature and a further reflux procedure. The hybrid NCs consisted of a CdTe core and a hybrid SiO2shell with CdS-like clusters. The clusters created by the reaction of Cd2+and S2-generated by the decomposition of TGA during reflux. The hybrid NCs exhibited tunable photoluminescence (PL) color from green to red and high PL quantum yield (PLQY). The CdS-like

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41

Korbutyak, D. V. "A2B6 NANOCRYSTALS DOPED WITH MAGNETIC IMPURITIES (REVIEW)." Optoelektronìka ta napìvprovìdnikova tehnìka 59 (September 18, 2024): 28–66. https://doi.org/10.15407/iopt.2024.59.028.

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The special properties of transition-metal-doped А2В6 nanostructures have opened up new opportunities for their use in electronics and optoelectronics, in solar cells, for the manufacture of short-wave light-emitting and laser diodes, and the resulting pronounced ferromagnetism at room temperature allows them to be used in spintronics devices. In addition, pure and doped ZnO nanocrystals, due to their non-toxicity, are used in biosensors, drug delivery and other biological applications. It is known that solar cells sensitized by quantum dots have attracted much attention because of their promi

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Mittal, Mona, Saurabh Gautam, Pramit Kumar Chowdhury, Shashank Deep, and Sameer Sapra. "Role of Tryptophan in Protein–Nanocrystals Interaction: Energy or Charge Transfer." Zeitschrift für Physikalische Chemie 233, no. 1 (2018): 41–54. http://dx.doi.org/10.1515/zpch-2017-1088.

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Abstract The understanding of the interaction between the semiconductor nanocrystals (NCs) and the proteins are essential for design and fabrication of nanocomposites for application in the field of biotechnology. Herein, we have studied the interaction between CdTe NCs and the proteins by steady-state and time-resolved photoluminescence (PL) spectroscopy. The steady-state PL intensity of CdTe NCs is quenched and enhanced in the presence of lysozyme and bovine serum albumin, respectively. However, the PL intensity of CdTe NCs is not affected with α-synuclein, indicating the role of tryptophan

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43

Mondal, Navendu, Apurba De, and Anunay Samanta. "All-inorganic perovskite nanocrystal assisted extraction of hot electrons and biexcitons from photoexcited CdTe quantum dots." Nanoscale 10, no. 2 (2018): 639–45. http://dx.doi.org/10.1039/c7nr07830g.

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44

Zhang, Hucheng, Huili Wang, Kelu Du, Xinxin Ma, and Jianji Wang. "Constructing nanosized CdTe nanocrystal clusters with thermo-responsive photoluminescence characteristics." RSC Advances 5, no. 129 (2015): 106599–606. http://dx.doi.org/10.1039/c5ra20111j.

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45

Li, Jun, Lin Wang, Kui Zhao, et al. "Preparation of CdTe nanocrystals and CdTe/SiO2 nanocomposites in glycol." Colloids and Surfaces A: Physicochemical and Engineering Aspects 257-258 (May 2005): 329–32. http://dx.doi.org/10.1016/j.colsurfa.2004.10.054.

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46

Gordillo, H., I. Suárez, R. Abargues, P. Rodríguez-Cantó, S. Albert, and J. P. Martínez-Pastor. "Polymer/QDs Nanocomposites for Waveguiding Applications." Journal of Nanomaterials 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/960201.

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In this paper we review our recent progress in a still young type of active waveguides based on hybrid organic (polymer)—inorganic (semiconductor quantum dots) materials. They can be useful for the implementation of new photonic devices, because combining the properties of the semiconductor nanostructures (quantum size carrier confinement and temperature independent emission) with the technological capabilities of polymers. These optical waveguides can be easily fabricated by spin-coating and UV photolithography on many substrates (SiO2/Si, in the present work). We demonstrate that it is possi

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47

Rodrigues, S. Sofia M., Zuzanna Oleksiak, David S. M. Ribeiro, et al. "Selective determination of sulphide based on photoluminescence quenching of MPA-capped CdTe nanocrystals by exploiting a gas-diffusion multi-pumping flow method." Anal. Methods 6, no. 19 (2014): 7956–66. http://dx.doi.org/10.1039/c4ay01823k.

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48

Jiang, Yuan, Shuhong Xu, Zengxia Zhao, et al. "Water–ethanol solvent mixtures: a promising liquid environment for high quality positively-charged CdTe nanocrystal preparation." RSC Adv. 5, no. 24 (2015): 18379–83. http://dx.doi.org/10.1039/c4ra14134b.

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49

Dremliuzhenko, K. S., B. N. Kulchytskyi, D. V. Korbutyak, et al. "Colloidal synthesis and optical properties of ultra-small CdTe quantum dots." Physics and Chemistry of Solid State 25, no. 4 (2024): 838–43. https://doi.org/10.15330/pcss.25.4.838-843.

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The colloidal synthesis of CdTe nanocrystals (NCs) in a reactor whose reaction medium consists of a solution of CdI2 salt, thioglycolic acid (TGA), and NaOH alkali. The gaseous precursor H2Te, which was obtained electrochemically in a galvanostatic cell, was passed through this solution. The size of the synthesized NCs was varied by egulating the flow of hydrogen telluride from galvanostatic cell. In turn, the outflow of hydrogen telluride depends on the current that passes through the cell electrodes. The growth rate of nanocrystals is determined by the rate of precursor feeding into the reac

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50

Olson, J. D., Y. W. Rodriguez, L. D. Yang, G. B. Alers, and S. A. Carter. "CdTe Schottky diodes from colloidal nanocrystals." Applied Physics Letters 96, no. 24 (2010): 242103. http://dx.doi.org/10.1063/1.3440384.

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