Quenching of photoluminescence in cadmium selenide nanocrystals in external electric fields for different excitation photon energies

L. I. Gurinovich, M. V. Artemyev, A. P. Stupak, S. Ya. Prislopskii, Sergei Zhukovsky, S. V. Gaponenko

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The effect of external electric fields on the photoluminescence of quantum-sized nanocrystals of cadmium selenide excited by photons of various energies is studied. Photoluminescence quenching by external electric fields is found to be different for nanoparticles with different shapes (quantum dots and nanorods) and does not depend on the exciting photon energy. The relationship between the strength of the external electric field and the degree of quenching is determined empirically for both types of nanoparticles. A possible mechanism for the effect of an external electric field on the excitation and quenching of photoluminescence in quantumsized nanoparticles is discussed.
Original languageEnglish
JournalJournal of Applied Spectroscopy
Volume79
Issue number1
Pages (from-to)95-103
ISSN0021-9037
DOIs
Publication statusPublished - 2012
Externally publishedYes

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