In:
Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 31 ( 2007-11), p. 62-64
Abstract:
For successive annealing stages the photoluminescence (PL) peaks of InXGa1-XN/GaN
quantum wells (QWs) shift initially towards red which is followed by a blue. This phenomenon contradicts the usual monotonic blueshift. We have found that the phenomena can be explained
properly only if we consider recombinations from the higher sub-bands to be present in the PL of the InXGa1-XN/GaN QWs, which is not usual. When a strong piezoelectric field exists across a QW,
as encountered in InXGa1-XN/GaN QWs, the probability of optical transitions from higher sub-bands of the QW become more probable. In this paper this theory has been established from experimental results.
Type of Medium:
Online Resource
ISSN:
1662-8985
DOI:
10.4028/www.scientific.net/AMR.31
DOI:
10.4028/www.scientific.net/AMR.31.62
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2007
detail.hit.zdb_id:
2265002-7
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