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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2012, Volume 96, Issue 2, Pages 118–122
(Mi jetpl3183)
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This article is cited in 36 scientific papers (total in 36 papers)
CONDENSED MATTER
Electroluminescence of CdSe/CdS quantum dots and the transfer of the exciton excitation energy in an organic light-emitting diode
A. A. Vashchenkoa, V. S. Lebedevab, A. G. Vitukhnovskya, R. B. Vasilievc, I. G. Samatovc a P. N. Lebedev Physical Institute, Russian Academy of Sciences
b Moscow Institute of Physics and Technology
c M. V. Lomonosov Moscow State University
Abstract:
A light emitting diode has been developed on the basis of multilayer nanostructures in which CdSe/CdS semiconductor colloidal quantum dots serve as emitters. Their absorption, photo-, and electroluminescence spectra have been obtained. The strong influence of the size effect and the density of particles in the layer on the spectral and electrophysical characteristics of the diode has been demonstrated. It has been shown that the rates of the transfer of the exciton excitation energy from organic molecules to quantum dots increase strongly even at a small increase in the radius of the core (CdSe) of a particle and depend strongly on the thickness of the shell (CdS) of the particle. The optimal arrangement of the layer of quantum dots with respect to the $p-n$ junction has been estimated from the experimental data. The results demonstrate that the spectral characteristics and rates of the electron processes in light-emitting devices based on quantum dots incorporated into an organic matrix can be efficiently controlled.
Received: 19.06.2012
Citation:
A. A. Vashchenko, V. S. Lebedev, A. G. Vitukhnovsky, R. B. Vasiliev, I. G. Samatov, “Electroluminescence of CdSe/CdS quantum dots and the transfer of the exciton excitation energy in an organic light-emitting diode”, Pis'ma v Zh. Èksper. Teoret. Fiz., 96:2 (2012), 118–122; JETP Letters, 96:2 (2012), 113–117
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https://www.mathnet.ru/eng/jetpl3183 https://www.mathnet.ru/eng/jetpl/v96/i2/p118
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Abstract page: | 647 | Full-text PDF : | 253 | References: | 64 | First page: | 14 |
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