Results 211 to 220 of about 28,667 (255)
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Probing cytotoxicity of CdSe and CdSe/CdS quantum dots
Chinese Chemical Letters, 2011Abstract Toxicities of CdSe and CdSe/CdS quantum dots (QDs) synthesized by ultrasound-assisted methods were investigated in vitro and in vivo. Five human cell lines were used to assess the cytotoxicity of as-prepared CdSe and CdSe/CdS by assays of MTT viability, red blood cell hemolysis, flow cytometry, and fluorescence imaging. The results show that
Yan Jie Bao +8 more
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Coupled Composite CdS−CdSe and Core−Shell Types of (CdS)CdSe and (CdSe)CdS Nanoparticles
The Journal of Physical Chemistry, 1996Addition of H2S and H2Se, in different proportions, to aqueous Cd(ClO4)2 solutions containing (NaPO3)6 led to the formation of coupled composite CdS−CdSe nanoparticles. Conversely, the sequential introduction of different amounts of H2S and H2Se (or H2Se and H2S) into aqueous Cd(ClO4)2 solutions containing (NaPO3)6 produced core−shell type (CdS)CdSe ...
Yongchi Tian +4 more
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Photoluminescence Enhancement of CdSe and CdSe–ZnS Nanocrystals by On‐Surface Ligand Modification
European Journal of Inorganic Chemistry, 2013AbstractWe have investigated the spectroscopic properties of CdSe and CdSe–ZnS nanocrystal quantum dots (QDs) in the presence of the electron acceptor tetracyanoethene (TCNE) in organic solution. Our results indicate that TCNE reacts with the n‐alkylamine capping ligands at the surfaces of nanocrystals to generate (cyanovinyl)amine products that remain
Marek Oszajca +5 more
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2021
?????????????? ???????????????????? ?? ???????????????????? ???????????????????????????????????????? (?? = 77 ??) ???????????????? ?? ???????????????????? ?????????????? ?????????????????? CdSe. ?????????????????? ?????????????????????????? ?? ??????, ?????? ???????????????????? ?????????????????? ?????????????????????? ???????????????? ?????????? ?????
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?????????????? ???????????????????? ?? ???????????????????? ???????????????????????????????????????? (?? = 77 ??) ???????????????? ?? ???????????????????? ?????????????? ?????????????????? CdSe. ?????????????????? ?????????????????????????? ?? ??????, ?????? ???????????????????? ?????????????????? ?????????????????????? ???????????????? ?????????? ?????
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2022
?????????????? ???????????????????????????? ???????????????? ???????????????? ?????????????? ???? ?????????????? ?? ???????????????????????? CdSe ?? ?????????????????? 1???5 ????. ????????????????, ???? ?????????? ???????????????????? ?????????????????????? ???? ???????????????????????????? ???????????????????????? Cd????? i SeO???????? ?? ?????????????
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?????????????? ???????????????????????????? ???????????????? ???????????????? ?????????????? ???? ?????????????? ?? ???????????????????????? CdSe ?? ?????????????????? 1???5 ????. ????????????????, ???? ?????????? ???????????????????? ?????????????????????? ???? ???????????????????????????? ???????????????????????? Cd????? i SeO???????? ?? ?????????????
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Synthesis and Optical Properties of CdSe and CdSe/CdS Nanoparticles
Chemistry of Materials, 1999This paper described the optical properties of CdSe and CdSe/CdS nanoparticles, synthesized by the microemulsion method followed by refluxing in toluene/methanol (60:1). Both optical spectroscopy and structural characterization (XPS, XRD, and HRTEM) suggested the core/shell structure of CdSe/CdS samples.
Encai Hao +5 more
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Theoretical studies of energy states of CdSe/ZnS/CdSe and ZnS/CdSe/ZnS quantum dots with an impurity
Materials Science and Engineering: B, 2021Abstract The energy states of an electron in the presence of impurity ion in center of A: CdSe/ZnS/CdSe and B: ZnS/CdSe/ZnS quantum dots were investigated by the numerical method in the framework of the effective mass approximation. The electronic properties of A and B quantum dots including the binding energy and the radial probability distribution ...
Abdolali Rabanian +3 more
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CdSe Nanorods Dominate Photocurrent of Hybrid CdSe−P3HT Photovoltaic Cell
ACS Nano, 2010Photovoltaic devices based on organic semiconductors require charge-separating networks (bulk heterojunctions) for optimal performance. Here we report on the fabrication of organic-inorganic photovoltaic devices with tailored (n-type) CdSe nanorod arrays aligned perpendicularly to the substrate.
Schierhorn, Martin +6 more
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2022
Photoelectrochemical properties of semiconductor films on the basis of CdSe and CdSe???.??????Te???.?????? are studied. It is shown that efficiency of phototransformation increases after modifying of a surface of semi-conductor films for Zn. The reasons of increase in efficiency of photoconversion on modified CdSe-electrodes are analyzed. Efficiency of
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Photoelectrochemical properties of semiconductor films on the basis of CdSe and CdSe???.??????Te???.?????? are studied. It is shown that efficiency of phototransformation increases after modifying of a surface of semi-conductor films for Zn. The reasons of increase in efficiency of photoconversion on modified CdSe-electrodes are analyzed. Efficiency of
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Be-enhanced CdSe island formation in CdSe/ZnSe heterostructures
Journal of Applied Physics, 2000The Be-enhanced formation of CdSe quantum dots in CdSe/ZnSe heterostructures grown by migration enhanced epitaxy on (001)GaAs substrates has been investigated using photoluminescence spectroscopy, x-ray techniques (diffraction and reflectometry), and transmission electron microscopy.
M. Keim +11 more
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