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Journal articles on the topic 'Cadmium Sulfide Nanocrystals'

Author: Grafiati

Published: 6 September 2023

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1

Pan, Z. Y., G. J. Shen, L. G. Zhang, Z. H. Lu, and J. Z. Liu. "Preparation of oriented cadmium sulfide nanocrystals." Journal of Materials Chemistry 7, no. 3 (1997): 531–35. http://dx.doi.org/10.1039/a604867f.

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2

Viswanatha, Ranjani, Heinz Amenitsch, Sanjitarani Santra, Sameer Sapra, Suwarna S. Datar, Yu Zhou, Saroj K. Nayak, Sanat K. Kumar, and D. D. Sarma. "Growth Mechanism of Cadmium Sulfide Nanocrystals." Journal of Physical Chemistry Letters 1, no. 1 (December 2, 2009): 304–8. http://dx.doi.org/10.1021/jz9001339.

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3

Sweeney, Rozamond Y., Chuanbin Mao, Xiaoxia Gao, Justin L. Burt, Angela M. Belcher, George Georgiou, and Brent L. Iverson. "Bacterial Biosynthesis of Cadmium Sulfide Nanocrystals." Chemistry & Biology 11, no. 11 (November 2004): 1553–59. http://dx.doi.org/10.1016/j.chembiol.2004.08.022.

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4

Spoerke, E. D., and J. A. Voigt. "Influence of Engineered Peptides Cadmium Sulfide Nanocrystals." Advanced Functional Materials 17, no. 13 (July 26, 2007): 2031–37. http://dx.doi.org/10.1002/adfm.200600163.

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5

Ghali, M., A. M. Eissa, and M. M. Mosaad. "Crystalline phase transformation of colloidal cadmium sulfide nanocrystals." International Journal of Modern Physics B 31, no. 06 (March 5, 2017): 1750037. http://dx.doi.org/10.1142/s0217979217500370.

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In this paper, we give a microscopic view concerning influence of the growth conditions on the physical properties of nanocrystals (NCs) thin films made of CdS, prepared using chemical bath deposition CBD technique. We show a crystalline phase transformation of CdS NCs from hexagonal wurtzite (W) structure to cubic zincblende (ZB) when the growth conditions change, particularly the solution pH values. This effect was confirmed using X-ray diffraction (XRD), transmission electron microscopy (TEM), optical absorption and photoluminescence (PL) measurements. The optical absorption spectra allow calculation of the bandgap value, [Formula: see text], where significant increase [Formula: see text]200 meV in the CdS bandgap when transforming from Hexagonal to Cubic phase was found.

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6

Chen, Minghai, Yong Nam Kim, Cuncheng Li, and Sung Oh Cho. "Controlled Synthesis of Hyperbranched Cadmium Sulfide Micro/Nanocrystals." Crystal Growth & Design 8, no. 2 (February 2008): 629–34. http://dx.doi.org/10.1021/cg700813h.

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7

Hong, Liying, Tai-Lok Cheung, Nanxi Rao, Qingling Ouyang, Yue Wang, Shuwen Zeng, Chengbin Yang, et al. "Millifluidic synthesis of cadmium sulfide nanoparticles and their application in bioimaging." RSC Advances 7, no. 58 (2017): 36819–32. http://dx.doi.org/10.1039/c7ra05401g.

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In this work, a miniature fluidic synthesis platform utilizing millimeter dimension channels yielding highly reproducible batch synthesis of luminescent cadmium sulfide (CdS) quantum dots and nanocrystals is demonstrated.

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8

Kasim, Thekra. "A Study of the electronic structure of CdS Nanocrystals using density functional theory." Iraqi Journal of Physics (IJP) 12, no. 24 (February 17, 2019): 25–32. http://dx.doi.org/10.30723/ijp.v12i24.317.

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Density Functional Theory at the generalized-gradient approximation level coupled with large unit cell method is used to simulate the electronic structure of (II-VI) zinc-blende cadmium sulfide nanocrystals that have dimensions 2-2.5 nm. The calculated properties include lattice constant, conduction and valence bands width, energy of the highest occupied orbital, energy of the lowest unoccupied orbital, energy gap, density of states etc. Results show that lattice constant and energy gap converge to definite values. However, highest occupied orbital, lowest unoccupied orbital fluctuates indefinitely depending on the shape of the nanocrystal.

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9

Bogoslovska, A. B., D. O. Grynko, and E. G. Bortchagovsky. "Luminescent properties of cadmium sulfide nanocrystals grown from gas phase." Semiconductor Physics, Quantum Electronics and Optoelectronics 25, no. 4 (December 22, 2022): 413–21. http://dx.doi.org/10.15407/spqeo25.04.413.

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Photoluminescent (PL) properties of undoped nanocrystals of cadmium sulfide were investigated as a function of excitation power intensity. Room-temperature PL spectra of CdS nanocrystals grown from the gas phase revealed two emission bands: with peak positions at 510 nm (near-band-edge emission) and close to 690 nm (deep trap defects). Tunable photoluminescence of CdS nanocrystals with the exchange of the main radiative channel from relaxation through defect levels to direct near-band-edge relaxation with the change of the color was demonstrated. Nonlinear behavior of the intensities of near-band-edge and defect level emission lines as well as the blue shift of the peak of defect level emission are discussed and explained by the finite capacitance of the defect subzone in the forbidden gap. The origin of the red-light emission is due to native defects such as sulfur vacancies or twinning interfaces.

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10

Belyaev, Alexey P., Vladimir P. Rubetz, and Vladimir V. Antipov. "Properties of filamentary nanocrystals of cadmium sulfide synthesized by vacuum evaporation and condensation." Butlerov Communications 57, no. 1 (January 31, 2019): 149–53. http://dx.doi.org/10.37952/roi-jbc-01/19-57-1-149.

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In recent decades, 1D structures, such as Nano whiskers, nanowires, Nano rods, etc., have attracted considerable interest of researcher due to their highly promising application in electronics, photonics, energy conversion and storage systems, medicine and pharmacology, and in modeling interaction with biomolecules and living calls. A prominent place among nanostructures is occupied by 1D nanostructures grown perpendicular to the substrate surface. These nanostructures are called Nano whiskers. Below reported about physicochemical studies of the ensemble of filamentary nanocrystals of cadmium sulfide synthesized by vacuum evaporation and condensation. It is presented the results of technological experiments, the results of electronic microscopy and the results of electron diffraction studies. It is shown that by means of vacuum evaporation and condensation it is possible to synthesize filamentary nanocrystals of diameter from 10 nm to few µm and of the length of few mm. It is revealed technological conditions necessary for the synthesis of filamentary nanocrystals. It is determined relation between growth rate of filamentary nanocrystals and their linear characteristics. It is shown that mechanism of growth of nanocrystals synthesized by used method is in full accordance with model views of classical mechanism vapor-liquid-crystal of Givargizov-Chernov. For revealing of crystalline perfection of filamentary nanocrystals it is used electron diffraction method, at so doing for increasing of the level of analytical signal it is used superposition of diffraction patterns from ensemble of filamentary nanocrystals. The method proposed permitted establish high degree of perfection of filamentary nanocrystals synthesized by vacuum evaporation and condensation.

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11

Zang, Huidong, Prahlad K. Routh, Qingping Meng, and Mircea Cotlet. "Electron transfer dynamics from single near infrared emitting lead sulfide–cadmium sulfide nanocrystals to titanium dioxide." Nanoscale 9, no. 38 (2017): 14664–71. http://dx.doi.org/10.1039/c7nr03500d.

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12

Tomlinson, Ian D., Tadd Kippeny, Laura Swafford, Nasir H. Siddiqui, and Sandra J. Rosenthal. "Novel Polyethylene Glycol Derivatives of Melatonin and Serotonin. Ligands for Conjugation to Fluorescent Cadmium Selenide/Zinc Sulfide core shell Nanocrystals." Journal of Chemical Research 2002, no. 5 (May 2002): 203–4. http://dx.doi.org/10.3184/030823402103171861.

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This paper describes the synthesis and characterisation of derivatives of melatonin and serotonin that may be attached to highly fluorescent cadmium selenide/zinc sulfide core shells nanocrystals for use in biological assays and fluorescence imaging applications.

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13

Wang, Pan, Zhifang Li, Tianye Yang, Zhiyang Wang, Pinwen Zhu, and Mingzhe Zhang. "Excitonic recombination dynamics mediated by polymorph transformation in cadmium sulfide nanocrystals." Journal of Materials Chemistry C 4, no. 28 (2016): 6784–89. http://dx.doi.org/10.1039/c6tc01914e.

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14

Dunleavy, Robert, Li Lu, Christopher J. Kiely, Steven McIntosh, and Bryan W. Berger. "Single-enzyme biomineralization of cadmium sulfide nanocrystals with controlled optical properties." Proceedings of the National Academy of Sciences 113, no. 19 (April 26, 2016): 5275–80. http://dx.doi.org/10.1073/pnas.1523633113.

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Nature has evolved several unique biomineralization strategies to direct the synthesis and growth of inorganic materials. These natural systems are complex, involving the interaction of multiple biomolecules to catalyze biomineralization and template growth. Herein we describe the first report to our knowledge of a single enzyme capable of both catalyzing mineralization in otherwise unreactive solution and of templating nanocrystal growth. A recombinant putative cystathionine γ-lyase (smCSE) mineralizes CdS from an aqueous cadmium acetate solution via reactive H2S generation froml-cysteine and controls nanocrystal growth within the quantum confined size range. The role of enzymatic nanocrystal templating is demonstrated by substituting reactive Na2S as the sulfur source. Whereas bulk CdS is formed in the absence of the enzyme or other capping agents, nanocrystal formation is observed when smCSE is present to control the growth. This dual-function, single-enzyme, aerobic, and aqueous route to functional material synthesis demonstrates the powerful potential of engineered functional material biomineralization.

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15

Lahariya, Vikas. "Study of Electroluminescence in Cadmium Sulfide Polymer Nanocomposite Films." Journal of Nano Research 49 (September 2017): 181–89. http://dx.doi.org/10.4028/www.scientific.net/jnanor.49.181.

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Nanocrystalline cadmium sulfide/Polyvinyl alcohol composite films were prepared by chemical route using Cadmium acetate and hydrogen sulfide gas as cadmium and sulfur source respectively. Poly vinyl Alcohal (PVA) used as polymer matrix. The initially loading of cadmium precursor influences the size as well as photoluminescence and electroluminescence properties of the Composite film. The films were characterized by X Ray Diffraction (XRD), Atomic Force Microscopy (AFM) and UV-Visible Absorption spectra. The X-ray Diffraction result showed that CdS nanocrystals embedded in polymer matrix were in a zinc blend cubic structure. The UV-Visible absorption spectra of composite film reveal the blue shift in the band gap energy with respect to CdS bulk (2.42eV) material owing to quantum confinement effect. The Photoluminescence emission spectra show the green light emission at 510 nm arising from the defects states due to excess of cadmium or sulfur anion vacancies. Electroluminescence study indicates enhanced emission with low turn on voltage for higher loading of cadmium in polymer matrix due to increased oscillator strength. When higher electric field is applied, light emission start due to acceleration collision mechanism by charge carries inside the composite film.

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16

Spoerke, Erik D., Matthew T. Lloyd, Yun-ju Lee, Timothy N. Lambert, Bonnie B. McKenzie, Ying-Bing Jiang, Dana C. Olson, Thomas L. Sounart, Julia W. P. Hsu, and James A. Voigt. "Nanocrystal Layer Deposition: Surface-Mediated Templating of Cadmium Sulfide Nanocrystals on Zinc Oxide Architectures." Journal of Physical Chemistry C 113, no. 37 (August 21, 2009): 16329–36. http://dx.doi.org/10.1021/jp900564r.

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17

Lazell, Mike, and Paul O'Brien. "Synthesis of CdS nanocrystals using cadmium dichloride and trioctylphosphine sulfide." Journal of Materials Chemistry 9, no. 7 (1999): 1381–82. http://dx.doi.org/10.1039/a901901d.

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18

Сминтина, В. А., В. М. Скобєєва, and М. В. Малушин. "LUMINESCENCE PROPERTIES OF LITIUM AND ALUMINIUM –DOPED CADMIUM SULFIDE NANOCRYSTALS." Sensor Electronics and Microsystem Technologies 8, no. 1 (January 22, 2011): 55–58. http://dx.doi.org/10.18524/1815-7459.2011.1.115945.

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19

Chen, Jia-Shiang, Huidong Zang, Mingxing Li, and Mircea Cotlet. "Hot excitons are responsible for increasing photoluminescence blinking activity in single lead sulfide/cadmium sulfide nanocrystals." Chemical Communications 54, no. 5 (2018): 495–98. http://dx.doi.org/10.1039/c7cc08356d.

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The kinetics of PL blinking for isolated PbS/CdS nanocrystals changes with the photon excitation energy, with PL blinking increasing in frequency and changing from a two-state to a multistate on/off switching when the excitation energy changes from 1S_h–1S_e (≈1.4 eV) to 1P_h–1P_e (≈2.4 eV).

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20

Zhao, Chun Lin, Li Xing, Xiao Hong Liang, Jun Hui Xiang, Fu Shi Zhang, Li Jie Cui, Bo Song, Shi Wei Chen, Hua Zheng Sai, and Zhen You Li. "Photoluminescence Enhancement of CdS Nanocrystals Fabricated on Dithiocarbamate Functionalized PET Substrates." Key Engineering Materials 512-515 (June 2012): 1511–15. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.1511.

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Cadmium sulfide (CdS) nanocrystals (NCs) were self-assembled and in-situ immobilized on the dithiocarbamate (DTCs)-functionalized polyethylene glycol terephthalate (PET) substrates between the organic (carbon disulfide diffused in n-hexane) –aqueous (ethylenediamine and Cd2+ dissolved in water) interface at room temperature. Powder X-ray diffraction measurement revealed the hexagonal structure of CdS nanocrystals. Morphological studies performed by scanning electron microscopy (SEM) and high-resolution transmission electron microscope (HRTEM) showed the island-like structure of CdS nanocrystals on PET substrates, as well as energy-dispersive X-ray spectroscopy (EDS) confirmed the stoichiometries of CdS nanocrystals. The optical properties of DTCs modified CdS nanocrystals were thoroughly investigated by ultraviolet-visible absorption spectroscopy (UV-vis) and fluorescence spectroscopy. The as-prepared DTCs present intrinsic hydrophobicity and strong affinity for CdS nanocrystals.

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21

Smyntyna, Valentyn, Bogdan Semenenko, Valentyna Skobeeva, and Nikolay Malushin. "Photoactivation of luminescence in CdS nanocrystals." Beilstein Journal of Nanotechnology 5 (March 25, 2014): 355–59. http://dx.doi.org/10.3762/bjnano.5.40.

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This paper presents the results of the research on the luminescence of cadmium sulfide nanocrystals (NCs) synthesized by colloid chemistry in a gelatinous matrix. The photostimulation of the short-wavelength emission band with λmax = 480 nm has been detected. It is shown that the determining factor of the photostimulation effect is the adsorption of the water molecules on the surface of NC. The observed effect is explained by the recombination mechanism that is responsible for the short-wavelength emission band.

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22

DUBCEK, P., S. BERNSTORFF, U. V. DESNICA, I. D. DESNICA-FRANKOVIC, and K. SALAMON. "GISAXS STUDY OF CADMIUM SULFIDE QUANTUM DOTS." Surface Review and Letters 09, no. 01 (February 2002): 455–59. http://dx.doi.org/10.1142/s0218625x02002452.

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In order to investigate the structure of semiconductor/glass composites prepared by ion implantation, the grazing incidence small angle X-ray scattering (GISAXS) technique was applied to CdS nanocrystals synthesized in SiO 2 by implanting separately the constituent Cd and S atoms with a dose of 1017/ cm 2 each, which resulted in a Gaussian depth density distribution of the dopants. Subsequently the samples were annealed at 700°C in order to form CdS particles. Due to the high concentration of nanocrystalline CdS, the scattered intensity is not following simple homogenous film models. Instead, additional particle scattering contribution is detected, as well as a multiplicative contribution due to inplane (lateral) particle correlation. From the first one, the particle size is estimated to be 4.6 nm, while an interparticle distance of 15–25 nm is deduced from the latter. Taking into account the applied dose, these values suggest that either part of the Cd and S ions are still dissolved in the amorphous substrate after annealing, and thus are not contributing to the CdS nanoparticle formation, or that implanted atoms have diffused deeper into the substrate during annealing.

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23

Svit, Kirill, Konstantin Zhuravlev, Sergey Kireev, and Karl K. Sabelfeld. "A stochastic model, simulation, and application to aggregation of cadmium sulfide nanocrystals upon evaporation of the Langmuir–Blodgett matrix." Monte Carlo Methods and Applications 27, no. 4 (November 6, 2021): 289–99. http://dx.doi.org/10.1515/mcma-2021-2100.

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Abstract A stochastic model of nanocrystals clusters formation is developed and applied to simulate an aggregation of cadmium sulfide nanocrystals upon evaporation of the Langmuir–Blodgett matrix. Simulations are compared with our experimental results. The stochastic model suggested governs mobilities both of individual nanocrystals and its clusters (arrays). We give a comprehensive analysis of the patterns simulated by the model, and study an influence of the surrounding medium (solvent) on the aggregation processes. In our model, monomers have a finite probability of separation from the cluster which depends on the temperature and binding energy between nanocrystals, and can also be redistributed in the composition of the cluster, leading to its compaction. The simulation results obtained in this work are compared with the experimental data on the aggregation of CdS nanocrystals upon evaporation of the Langmuir–Blodgett matrix. This system is a typical example from real life and is noteworthy in that the morphology of nanocrystals after evaporation of the matrix cannot be described exactly by a model based only on the motion of individual nanocrystals or by a cluster-cluster aggregation model.

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24

PAUL, RIMA, P. KUMBHAKAR, and A. K. MITRA. "BLUE-GREEN LUMINESCENCE OF CHEMICALLY SYNTHESIZED MWCNT/CdS NANOHYBRID STRUCTURE." International Journal of Nanoscience 10, no. 01n02 (February 2011): 223–26. http://dx.doi.org/10.1142/s0219581x11007879.

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A simple inexpensive wet chemical technique at room temperature to prepare hybrid structure of multiwalled carbon nanotubes (MWCNT) and cadmium sulfide ( CdS ) nanoparticles has been reported in this paper. Cadmium sulfide nanocrystals of average size 5 nm have been synthesized and attached with the surfaces of MWCNTs. The hybrid material is characterized by high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and Raman spectroscopy. Interesting optical properties of the composite are revealed through UV–visible and photoluminescence (PL) spectroscopy. Significant blue-green PL emission covering a region from 450–600 nm wavelength has been observed when excited by UV radiation of 220–240 nm wavelength. Sharp emission peak has been obtained and this may find wide applications in optical sensors and optoelectronic devices.

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25

HUANG, S. Y., S. XU, J. D. LONG, J. W. CHAI, and Q. J. CHENG. "CdS NANORODS FABRICATED BY ICP-ASSISTED MAGNETRON SPUTTERING AT ROOM TEMPERATURE." Surface Review and Letters 15, no. 04 (August 2008): 515–18. http://dx.doi.org/10.1142/s0218625x08011676.

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Cadmium sulfide ( CdS ) nanocrystals are successfully fabricated on glass and silicon substrates at room temperature with low-frequency (460 kHz) inductively coupled plasma assisted magnetron sputtering technique. Both size and shape can be controlled by changing deposition parameters and substrates. Field-emission scanning electron microscope, energy dispersive X-ray spectroscopy, and X-ray diffraction are adopted to measure the properties of CdS nanorods.

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26

Anderson, M. A., S. Gorer, and R. M. Penner. "A Hybrid Electrochemical/Chemical Synthesis of Supported, Luminescent Cadmium Sulfide Nanocrystals." Journal of Physical Chemistry B 101, no. 31 (July 1997): 5895–99. http://dx.doi.org/10.1021/jp970627c.

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27

Yang, Guangrui, Dezhi Qin, Xian Du, Li Zhang, Ganqing Zhao, Qiuxia Zhang, and Jiulin Wu. "Aqueous synthesis and characterization of bovine hemoglobin-conjugated cadmium sulfide nanocrystals." Journal of Alloys and Compounds 604 (August 2014): 181–87. http://dx.doi.org/10.1016/j.jallcom.2014.03.107.

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28

Сминтина, В. А., В. М. Скобєєва, М. В. Малушин, and Д. А. Струц. "INFLUENCE OF THE IMPURITY OF MANGANESE ON LUMINESCENCE CADMIUM SULFIDE NANOCRYSTALS." Sensor Electronics and Microsystem Technologies 9, no. 2 (April 26, 2012): 34–38. http://dx.doi.org/10.18524/1815-7459.2012.2.112998.

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29

Assilbekova, A. M., A. A. Aldongarov, and I. S. Irgibaeva. "АССМОТРЕНИЕ ВЛИЯНИЯ САМОАГРЕГИРОВАНИЯ В НАНОРАЗМЕРНЫХ КЛАСТЕРАХ CDS." Recent Contributions to Physics 78, no. 3 (September 2021): 51–60. http://dx.doi.org/10.26577/rcph.2021.v78.i3.06.

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Quantum dots, such as cadmium sulfide (CdS), are semiconductor nanocrystals that possess unique optical properties, including widerange excitation, sizetunable narrow emission spectra and high photostability. The size and composition of quantum dots can be varied to obtain the desired emission properties and make them suitable for various optical and biomedical applications. In this article, the effect of selfaggregation on the electronic absorption spectra and on the dipole moment in CdS nanoparticles is considered using computer modeling methods based on the density functional tightbinding (DFTB). The object of the study is four CdS structures and two models of an aggregated dimer for each cluster. The construction of dimers of cadmium sulfide clusters showed that a higher level of passivation can be achieved in comparison with the initial monomers. In this case, the construction of dimers should occur along the direction of the dipole moment of the monomer in order to minimize it. Therefore, it can be assumed that the dipole moment plays a key role in the formation of trap states in nanosized clusters of cadmium sulfide, and the problem of passivation is reduced to minimizing the dipole moment.

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30

Ma, Ning, Ruining Cai, and Chaomin Sun. "Threonine dehydratase enhances bacterial cadmium resistance via driving cysteine desulfuration and biomineralization of cadmium sulfide nanocrystals." Journal of Hazardous Materials 417 (September 2021): 126102. http://dx.doi.org/10.1016/j.jhazmat.2021.126102.

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31

Haase, M., and A. P. Alivisatos. "Arrested solid-solid phase transition in 4-nm-diameter cadmium sulfide nanocrystals." Journal of Physical Chemistry 96, no. 16 (August 1992): 6756–62. http://dx.doi.org/10.1021/j100195a042.

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32

Boote, Brett W., Long Men, Himashi P. Andaraarachchi, Ujjal Bhattacharjee, Jacob W. Petrich, Javier Vela, and Emily A. Smith. "Germanium–Tin/Cadmium Sulfide Core/Shell Nanocrystals with Enhanced Near-Infrared Photoluminescence." Chemistry of Materials 29, no. 14 (July 17, 2017): 6012–21. http://dx.doi.org/10.1021/acs.chemmater.7b01815.

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33

Li, Xin, and Jeffery L. Coffer. "Effect of Pressure on the Photoluminescence of Polynucleotide-Stabilized Cadmium Sulfide Nanocrystals." Chemistry of Materials 11, no. 9 (September 1999): 2326–30. http://dx.doi.org/10.1021/cm980485e.

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34

Xu, Ronghui, Yongxian Wang, Guangqiang Jia, Wanbang Xu, Sheng Liang, and Duanzhi Yin. "Zinc blende and wurtzite cadmium sulfide nanocrystals with strong photoluminescence and ultrastability." Journal of Crystal Growth 299, no. 1 (February 2007): 28–33. http://dx.doi.org/10.1016/j.jcrysgro.2006.11.252.

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35

Rashid, Muhammad Haroon, Ants Koel, Toomas Rang, Nadeem Nasir, Nadeem Sabir, Faheem Ameen, and Abher Rasheed. "Optical Dynamics of Copper-Doped Cadmium Sulfide (CdS) and Zinc Sulfide (ZnS) Quantum-Dots Core/Shell Nanocrystals." Nanomaterials 12, no. 13 (July 1, 2022): 2277. http://dx.doi.org/10.3390/nano12132277.

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Recently, quantum-dot-based core/shell structures have gained significance due to their optical, optoelectronic, and magnetic attributes. Controlling the fluorescence lifetime of QDs shells is imperative for various applications, including light-emitting diodes and single-photon sources. In this work, novel Cu-doped CdS/ZnS shell structures were developed to enhance the photoluminescence properties. The objective was to materialize the Cu-doped CdS/ZnS shells by the adaptation of a two-stage high-temperature doping technique. The developed nanostructures were examined with relevant characterization techniques such as transmission electron microscopy (TEM) and ultraviolet–visible (UV–vis) emission/absorption spectroscopy. Studying fluorescence, we witnessed a sharp emission peak at a wavelength of 440 nm and another emission peak at a wavelength of 620 nm, related to the fabricated Cu-doped CdS/ZnS core/shell QDs. Our experimental results revealed that Cu-doped ZnS shells adopted the crystal structure of CdS due to its larger bandgap. Consequently, this minimized lattice mismatch and offered better passivation to any surface defects, resulting in increased photoluminescence. Our developed core/shells are highly appropriate for the development of efficient light-emitting diodes.

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36

Huang, Fenghua, and Yaling Lan. "Aqueous Synthesis of Water-Soluble L-Cysteine-Modified Cadmium Sulfide Doped with Silver Ion/Zinc Sulfide Nanocrystals." Spectroscopy Letters 48, no. 3 (October 14, 2014): 159–62. http://dx.doi.org/10.1080/00387010.2013.865134.

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37

L, Saravanan, Jayavel R, Pandurangan A, Liu Jih-Hsin, and Miao Hsin-Yuan. "Synthesis, structural and optical properties of Sm3+ and Nd3+ doped cadmium sulfide nanocrystals." Materials Research Bulletin 52 (April 2014): 128–33. http://dx.doi.org/10.1016/j.materresbull.2013.12.054.

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38

Zhang, Peng, and Lian Gao. "Cadmium sulfide nanocrystals via two-step hydrothermal process in microemulsions: synthesis and characterization." Journal of Colloid and Interface Science 266, no. 2 (October 2003): 457–60. http://dx.doi.org/10.1016/s0021-9797(03)00671-4.

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39

Chen, Deliang, and Lian Gao. "Microemulsion-mediated synthesis of cadmium zinc sulfide nanocrystals with composition-modulated optical properties." Solid State Communications 133, no. 3 (January 2005): 145–50. http://dx.doi.org/10.1016/j.ssc.2004.10.024.

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40

ANDERSON, M. A., S. GORER, and R. M. PENNER. "ChemInform Abstract: A Hybrid Electrochemical/Chemical Synthesis of Supported, Luminescent Cadmium Sulfide Nanocrystals." ChemInform 28, no. 43 (August 3, 2010): no. http://dx.doi.org/10.1002/chin.199743024.

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41

Lee, H. L., A. M. Issam, M. Belmahi, M. B. Assouar, H. Rinnert, and M. Alnot. "Synthesis and Characterizations of Bare CdS Nanocrystals Using Chemical Precipitation Method for Photoluminescence Application." Journal of Nanomaterials 2009 (2009): 1–9. http://dx.doi.org/10.1155/2009/914501.

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Bare cadmium sulfide (CdS) nanocrystals were successfully synthesized by the thermolysis of a single-source organometallic precursor, cadmium chloride hemipentahydrate (CdCl2⋅2.5H2O) with thiourea in ethanol. The microstructure of the CdS samples was characterized using XRD, TEM, and Raman spectroscopy. The XRD's results showed that there was a transformation from cubic to hexagonal crystalline phase when higher mass ofCdCl2⋅2.5H2Owas used. Further experimental with differentCd2+source showed ionCl−originated fromCdCl2⋅2.5H2Oattributed to this crystalline phase transformation. The UV-Visible analysis indicated that quantum confinement effect took place when compared to the bulk CdS. However, the photoluminescence experiments revealed that the red-light emission was observed in all samples. This finding could be ascribed to deep trap defects that were due to sulfur vacancies as suggested by XPS and also the fact that the bare CdS nanoparticles are in contact with each other as shown in the TEM images.

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Liu, Qian, Kun Wang, Juan Huan, Gangbing Zhu, Jing Qian, Hanping Mao, and Jianrong Cai. "Graphene quantum dots enhanced electrochemiluminescence of cadmium sulfide nanocrystals for ultrasensitive determination of pentachlorophenol." Analyst 139, no. 11 (2014): 2912. http://dx.doi.org/10.1039/c4an00307a.

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Wu, P. W., L. Gao, and J. K. Guo. "Formation of disk-like aggregates of cadmium sulfide nanocrystals at the oil–water interface." Thin Solid Films 408, no. 1-2 (April 2002): 132–35. http://dx.doi.org/10.1016/s0040-6090(02)00063-9.

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Kennedy, Michael T., Brian A. Korgel, Harold G. Monbouquette, and Joseph A. Zasadzinski. "Cryo-Transmission Electron Microscopy Confirms Controlled Synthesis of Cadmium Sulfide Nanocrystals within Lecithin Vesicles." Chemistry of Materials 10, no. 8 (August 1998): 2116–19. http://dx.doi.org/10.1021/cm970744k.

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Martín-Rodríguez, R., J. González, R. Valiente, F. Aguado, D. Santamaría-Pérez, and F. Rodríguez. "Reversibility of the zinc-blende to rock-salt phase transition in cadmium sulfide nanocrystals." Journal of Applied Physics 111, no. 6 (March 15, 2012): 063516. http://dx.doi.org/10.1063/1.3697562.

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Smertenko, P. S., D. A. Grynko, N. M. Osipyonok, O. P. Dimitriev, and A. A. Pud. "Carbon fiber as a flexible quasi-ohmic contact to cadmium sulfide micro- and nanocrystals." physica status solidi (a) 210, no. 9 (June 5, 2013): 1851–55. http://dx.doi.org/10.1002/pssa.201228805.

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Skobeeva, V. M., V. A. Smyntyna, O. I. Sviridova, D. A. Struts, and A. V. Tyurin. "Optical properties of cadmium sulfide nanocrystals obtained by the sol-gel method in gelatin." Journal of Applied Spectroscopy 75, no. 4 (July 2008): 576–82. http://dx.doi.org/10.1007/s10812-008-9074-x.

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Deshmukh, Samadhan H., Srijan Chatterjee, Deborin Ghosh, and Sayan Bagchi. "Ligand Dynamics Time Scales Identify the Surface–Ligand Interactions in Thiocyanate-Capped Cadmium Sulfide Nanocrystals." Journal of Physical Chemistry Letters 13, no. 13 (March 30, 2022): 3059–65. http://dx.doi.org/10.1021/acs.jpclett.2c00493.

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Lotfi Orimi, R., N. Shahtahmasebi, N. Tajabor, and A. Kompany. "The effect of solvent on the crystal structure and size distribution of cadmium sulfide nanocrystals." Physica E: Low-dimensional Systems and Nanostructures 40, no. 9 (August 2008): 2894–98. http://dx.doi.org/10.1016/j.physe.2008.02.011.

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Gorer, S., J. A. Ganske, J. C. Hemminger, and R. M. Penner. "Size-Selective and Epitaxial Electrochemical/Chemical Synthesis of Sulfur-Passivated Cadmium Sulfide Nanocrystals on Graphite." Journal of the American Chemical Society 120, no. 37 (September 1998): 9584–93. http://dx.doi.org/10.1021/ja981676l.

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