Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/98210
Type: Artigo de periódico
Title: Three-dimensional Quantum-size Effect In Chemically Deposited Cadmium Selenide Films
Author: Hodes G.
Albu-Yaron A.
Decker F.
Motisuke P.
Abstract: Optical band gaps, Eg, up to 0.5 eV higher than in single-crystal samples, are observed for chemically deposited films of CdSe and explained in terms of a quantum-size effect, whereby the electrons are localized in individual crystallites. The increase in Eg depends strongly on deposition temperature, with the greatest increase obtained at the lowest temperature. Annealing at temperatures above the deposition temperature causes a decrease in Eg; this decrease is stronger at higher annealing temperature. Structural studies of the as-deposited layers showed them to be composed of microcrystalline, cubic CdSe, and electron microscopy resolved them into individual crystallites of typically 4080-A diameter, depending on deposition temperature. This is the first example reported of a three-dimensional quantum-size effect in a film. © 1987 The American Physical Society.
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Rights: aberto
Identifier DOI: 10.1103/PhysRevB.36.4215
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0345187235&partnerID=40&md5=07f7937db78a81e2ba7678765040566c
Date Issue: 1987
Appears in Collections:Unicamp - Artigos e Outros Documentos

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