In:
physica status solidi c, Wiley, Vol. 6, No. S2 ( 2009-06)
Kurzfassung:
We report on experimental and theoretical studies of the polarization selection rules of the emission of non‐polar GaN/AlN self‐assembled quantum dots. Time‐integrated and time‐resolved photoluminescence measurements have been performed to determine the degree of polarization. It is found that the emission of some samples can be predominantly polarized parallel to the wurtzite c axis, in striking difference with the previously reported results for bulk GaN and its heterostructures, in which the emission was preferentially polarized perpendicular to the c axis. Theoretical calculations based on an 8‐band k·p model are used to analyze the relative importance of strain, confinement and quantum dot shape on the polarization selection rules. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Materialart:
Online-Ressource
ISSN:
1862-6351
,
1610-1642
DOI:
10.1002/pssc.200880868
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2009
ZDB Id:
2105580-4
ZDB Id:
2102966-0
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