Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/55307
Type: Artigo de periódico
Title: BAND-GAP SHIFT IN CDS SEMICONDUCTOR BY PHOTOACOUSTIC-SPECTROSCOPY - EVIDENCE OF A CUBIC TO HEXAGONAL LATTICE TRANSITION
Author: ZELAYAANGEL, O
ALVARADOGIL, JJ
LOZADAMORALES, R
VARGAS, H
DASILVA, AF
Abstract: The band-gap energies of the CdS semiconductor are obtained by a photoacoustic spectroscopy (PAS) technique over a range of temperature of thermal annealing (TTA), in which the evolution of the sample structure is characterized by x-ray diffraction patterns. The PAS experiment gives a set of data for the band-gap shift in the region of the fundamental absorption edge. With increasing TTA the band-gap shift increases up to a critical TTA when its slope decreases in a roughly symmetrical way. It is suggested that at this temperature a cubic to hexagonal-lattice transition occurs.
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.111184
Date Issue: 1994
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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