Nonmonotonic dependence of the photoluminescence peak position of cadmium selenide nanocrystals as a function of the excitation photon energy

The photoluminescence properties of colloidal CdSe quantum dots with a mean size of 3 nm were studied. The experimental results revealed the nonmonotonic dependence of the photoluminescence peak’s position as a function of the excitation photon energy being varied from 2.41 to 3.68 eV. This effect c...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2010-12, Vol.74 (12), p.1726-1728
Main Authors: Tselikov, G. I., Dorofeev, S. G., Shalygina, O. A., Timoshenko, V. Yu
Format: Article
Language:English
Subjects:
Cadmium
Cadmium selenides
Excitation
Hadrons
Heavy Ions
Intermetallic compounds
Nanocrystals
Nuclear Physics
Photoluminescence
Physics
Physics and Astronomy
Proceedings of the XII All-Russia Seminar “The Wave Phenomena in Inhomogeneous Media”
Quantum dots
Size distribution
X-rays
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Summary:The photoluminescence properties of colloidal CdSe quantum dots with a mean size of 3 nm were studied. The experimental results revealed the nonmonotonic dependence of the photoluminescence peak’s position as a function of the excitation photon energy being varied from 2.41 to 3.68 eV. This effect can be explained by the size distribution of the nanocrystals and the spectral dependence of their absorption coefficients.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873810120245