skip to main content

SciTech ConnectSciTech Connect

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

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.
Authors:
; ; ;  [1] ;  [2] ; ; ;  [3] ;  [2] ;  [4]
  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)
  4. (Russian Federation)
Publication Date:
OSTI Identifier:
22217972
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 13; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AMPLITUDES; CADMIUM SELENIDES; CADMIUM SULFIDES; EFFICIENCY; LAYERS; PHOTOCONDUCTIVITY; POROUS MATERIALS; QUANTUM DOTS; SEMICONDUCTOR MATERIALS; TIN OXIDES