Fizika Nizkikh Temperatur: Volume 43, Number 12 (December 2017), p. 1797-1799    ( to contents , go back )

Optical absorption by colloidal quantum dots of cadmium selenide in a dielectric matrix

S.I. Pokutnyi

Институт химии поверхности им. А.А.Чуйко НАНУ, ул. Генерала Наумова, 17, г. Киев, 03164, Украина
E-mail: pokutnyi.serg@gmail.com

Received March 27, 2017, revised May 28, 2017

Abstract

It is shown that the mechanism of light absorption by colloidal quantum dots of cadmium selenide (with mean radii of quantum dots commensurate with the Bohr radius of an exciton in a single crystal of cadmium selenide) is caused by an interband transition of an electron from the quantum level of the valence band of the quantum dot to the quantum level of the quantum-well conduction band.

PACS: 73.21.–b Electronic states and collective excitations in multilayer structures, quantum wells, mesoscopic and nanoscale systems.

Key words: quantum-size levels of an electron and a hole, absorption of light, quantum dots.

Published online:: October 25, 2017

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