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

Journal Article · Mon Jul 15 00:00:00 EDT 2013 · Semiconductors

DOI:https://doi.org/10.1134/S1063782613070245· OSTI ID:22121701

Vashchenko, A. A.; Lebedev, V. S. ^[1]; Vasiliev, R. B. ^[2]; Brunkov, P. N. ^[3]; Bychkovskii, D. N. ^[4]

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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)

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.

• OSTI ID: 22121701
• Journal Information: Semiconductors, Vol. 47, Issue 7; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM SELENIDES
CADMIUM SULFIDES
DESIGN
EFFICIENCY
EXCITATION
LAYERS
LIGHT EMITTING DIODES
LUMINESCENCE
OPTIMIZATION
QUANTUM DOTS
SEMICONDUCTOR MATERIALS