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Characterization of tunneling and free-carrier screening in coupled asymmetric GaN/AlGaN quantum discs

Abstract:
We present a systematic investigation of free-carrier screening in coupled asymmetric GaN quantum discs with embedded AlGaN barriers using time-integrated and time-resolved micro-photoluminescence measurements, supported by three-dimensional multi-band k.p computational modeling. Free-carrier screening effects decreased with the barrier thickness, which indicates that the source of the free-carriers were carriers tunneling through the barrier.
Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
Physics of Semiconductors, Pts A and B
Volume:
893
Pages:
1003-1004
Publication date:
2007-01-01
Event title:
28th International Conference on the Physics of Semiconductors (ICPS-28)
ISSN:
0094-243X
ISBN:
9780735403970
Keywords:
Pubs id:
pubs:2883
UUID:
uuid:04c50ab3-52ea-4c42-acca-38c4ae7b74c2
Local pid:
pubs:2883
Source identifiers:
2883
Deposit date:
2012-12-19

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