The effect of an external electric field on photoluminescence of CdSe colloidal nanoparticles of different topologies

Photoluminescence of CdSe colloidal nanocrystals of different topologies in an external electric field has been studied. It has been found that quenching of photoluminescence, which takes place in quantum dots, is proportional to the square of the field, and in elongated nanocrystals quenching of ph...

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Bibliographic Details
Published in:Optics and spectroscopy 2017, Vol.122 (1), p.83-87
Main Authors: Muravitskaya, A. O., Gurinovich, L. I., Prudnikau, A. V., Artemyev, M. V., Gaponenko, S. V.
Format: Article
Language:English
Subjects:
Applications” (PCNSPA-2016)
Cadmium selenides
Electric fields
International Conference “Photonic Colloidal Nanostructures: Synthesis
Lasers
Nanocrystals
Nanoparticles
Optical Devices
Optics
Photoluminescence
Photonics
Physics
Physics and Astronomy
Properties
Quantum dots
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Summary:Photoluminescence of CdSe colloidal nanocrystals of different topologies in an external electric field has been studied. It has been found that quenching of photoluminescence, which takes place in quantum dots, is proportional to the square of the field, and in elongated nanocrystals quenching of photoluminescence is proportional to the square root. A physical model of the mechanism of quenching based on tunneling of free charges through potential barrier nanocrystal/matrix has been proposed.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X17010192