Photoconductivity of structures based on the SnO{sub 2} porous matrix coupled with core-shell CdSe/CdS quantum dots

Journal Article · Mon Sep 23 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4823549· OSTI ID:22217972

Drozdov, K. A.; Kochnev, V. I.; Dobrovolsky, A. A.; Khokhlov, D. R. ^[1]; Popelo, A. V. ^[2]; Rumyantseva, M. N.; Gaskov, A. M.; Ryabova, L. I. ^[3]; Vasiliev, R. B. ^[2]

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1. Department of Physics, Moscow State University, 119991 Moscow (Russian Federation)
2. Department of Materials Science, Moscow State University, 119991 Moscow (Russian Federation)
3. Department of Chemistry, Moscow State University, 119991 Moscow (Russian Federation)

Embedding of quantum dots into porous oxide matrixes is a perspective technique for photosensitization of a structure. We show that the sensitization efficiency may be increased by the use of core-shell quantum dots. It is demonstrated that the photoresponse amplitude in a SnO{sub 2} porous matrix with CdSe/CdS quantum dots depends non-monotonously on the number of atomic layers in a shell. The best results are obtained for SnO{sub 2} matrixes coupled with the quantum dots with three atomic layers of a shell. Mechanisms responsible for the structure sensitization are discussed.

• OSTI ID: 22217972
• Journal Information: Applied Physics Letters, Vol. 103, Issue 13; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMPLITUDES
CADMIUM SELENIDES
CADMIUM SULFIDES
EFFICIENCY
LAYERS
PHOTOCONDUCTIVITY
POROUS MATERIALS
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
TIN OXIDES