High-energy electron irradiation effects onCdS1−xSexquantum dots in borosilicate glass

Autor:	M. Kranjčec, Volodymyr O. Yukhymchuk, I.G. Megela, Yu. M. Azhniuk, I.I. Turok, Vasyl V. Lopushansky, A.V. Gomonnai
Rok vydání:	2002
Předmět:	Materials science Condensed matter physics Absorption edge Quantum dot Borosilicate glass Ionization Electron beam processing Electron Absorption (logic) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Molecular physics Blueshift
Zdroj:	Physical Review B. 65
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.65.245327
Popis:	The effect of 5- and 10-MeV electron irradiation and subsequent annealing upon the optical absorption of ${\mathrm{CdS}}_{1\ensuremath{-}x}{\mathrm{Se}}_{x}$ quantum dots embedded in a borosilicate glass matrix is studied. Gradual smearing and vanishing of the confinement-related maxima and a blue shift of the absorption edge are observed. The transformation of the spectra depends on the quantum dot composition and size as well as on the irradiating electrons' energy and fluence. The mechanisms responsible for the observed behavior are discussed. The radiation-induced changes can be related to ionization of the quantum dots with charge-carrier transfer between the quantum dots and the electron (hole) traps in the host matrix.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::67c382534ac966730c93a87fac835824 https://doi.org/10.1103/physrevb.65.245327 Zobrazit plný text záznamu