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Title: Mechanism of electronic-excitation transfer in organic light-emitting devices based on semiconductor quantum dots

The results of an experimental study of organic light-emitting diodes (LEDs) with luminescent layers based on two types of CdSe/CdS semiconductor quantum dots (QDs) with an average CdSe core diameter of 3 and 5 nm and a characteristic CdS shell thickness of 0.5 nm are presented. The dependences of the LED efficiency on the QD concentration are determined. The experimental data are used to determine the mechanism of electronic-excitation transfer from the organic matrix to the semiconductor QDs. Ways of optimizing the design of the LEDs in order to improve their efficiency are suggested on this basis.
Authors:
; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
  2. Moscow State University (Department of Materials Science) (Russian Federation)
  3. Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)
  4. Optogan-OLS (Russian Federation)
Publication Date:
OSTI Identifier:
22121701
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 47; Journal Issue: 7; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CADMIUM SELENIDES; CADMIUM SULFIDES; DESIGN; EFFICIENCY; EXCITATION; LAYERS; LIGHT EMITTING DIODES; LUMINESCENCE; OPTIMIZATION; QUANTUM DOTS; SEMICONDUCTOR MATERIALS