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Title: Modification of Photoconductivity Spectra in ZnO–CdSe Quantum- Dot Composites upon Exposure to Additional Photoexcitation

Abstract

The incorporation of CdS nanocrystals into a porous ZnO matrix results in sensitization of the composite in the visible spectral region. Studies of the photoconductivity spectra upon variable external illumination show that the spectra undergo reversible transformations. It is shown that the shape of the peak and the position of the local photoconductivity maximum corresponding to nanocrystals depend on the wavelength distribution of the incident radiation intensity. The mechanisms responsible for the process are discussed.

Authors:
;  [1]; ; ;  [2];  [1]
  1. Moscow State University, Faculty of Physics (Russian Federation)
  2. Moscow State University, Faculty of Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22749880
Resource Type:
Journal Article
Journal Name:
Semiconductors
Additional Journal Information:
Journal Volume: 52; Journal Issue: 7; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7826
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CADMIUM SELENIDES; CADMIUM SULFIDES; PHOTOCONDUCTIVITY; POROUS MATERIALS; QUANTUM DOTS; VISIBLE SPECTRA; ZINC OXIDES

Citation Formats

Drozdov, K. A., Krylov, I. V., Chizhov, A. S., Rumyantseva, M. N., Ryabova, L. I., and Khokhlov, D. R., E-mail: khokhlov@mig.phys.msu.ru. Modification of Photoconductivity Spectra in ZnO–CdSe Quantum- Dot Composites upon Exposure to Additional Photoexcitation. United States: N. p., 2018. Web. doi:10.1134/S1063782618070059.
Drozdov, K. A., Krylov, I. V., Chizhov, A. S., Rumyantseva, M. N., Ryabova, L. I., & Khokhlov, D. R., E-mail: khokhlov@mig.phys.msu.ru. Modification of Photoconductivity Spectra in ZnO–CdSe Quantum- Dot Composites upon Exposure to Additional Photoexcitation. United States. doi:10.1134/S1063782618070059.
Drozdov, K. A., Krylov, I. V., Chizhov, A. S., Rumyantseva, M. N., Ryabova, L. I., and Khokhlov, D. R., E-mail: khokhlov@mig.phys.msu.ru. Sun . "Modification of Photoconductivity Spectra in ZnO–CdSe Quantum- Dot Composites upon Exposure to Additional Photoexcitation". United States. doi:10.1134/S1063782618070059.
@article{osti_22749880,
title = {Modification of Photoconductivity Spectra in ZnO–CdSe Quantum- Dot Composites upon Exposure to Additional Photoexcitation},
author = {Drozdov, K. A. and Krylov, I. V. and Chizhov, A. S. and Rumyantseva, M. N. and Ryabova, L. I. and Khokhlov, D. R., E-mail: khokhlov@mig.phys.msu.ru},
abstractNote = {The incorporation of CdS nanocrystals into a porous ZnO matrix results in sensitization of the composite in the visible spectral region. Studies of the photoconductivity spectra upon variable external illumination show that the spectra undergo reversible transformations. It is shown that the shape of the peak and the position of the local photoconductivity maximum corresponding to nanocrystals depend on the wavelength distribution of the incident radiation intensity. The mechanisms responsible for the process are discussed.},
doi = {10.1134/S1063782618070059},
journal = {Semiconductors},
issn = {1063-7826},
number = 7,
volume = 52,
place = {United States},
year = {2018},
month = {7}
}