Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/77895
Type: Artigo de periódico
Title: TIME-RESOLVED PHOTOLUMINESCENCE OF POROUS SILICON - EVIDENCE FOR TUNNELING LIMITED RECOMBINATION IN A BAND OF LOCALIZED STATES
Author: TESSLER, LR
ALVAREZ, F
TESCHKE, O
Abstract: Time resolved photoluminescence of porous silicon at room temperature was measured for several emission energies under 2 ns nitrogen laser excitation. For each emission energy studied there is a broad distribution of lifetimes extending over a few decades. The mean value of the distribution varies with the emission energy, from 3 (2.77 eV) to 50 mus (1.96 eV). The results can be explained by assuming a tunneling limited recombination mechanism between bands of localized states. We associate this behavior with a superficial disordered Si:O:H compound rather than with quantum confinement effects.
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.109371
Date Issue: 1993
Appears in Collections:Unicamp - Artigos e Outros Documentos

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