Observation of confinement-dependent exciton binding energy of GaN quantum dots
作者:
Peter Ramvall,
Satoru Tanaka,
Shintaro Nomura,
Philippe Riblet,
Yoshinobu Aoyagi,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 8
页码: 1104-1106
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.122098
出版商: AIP
数据来源: AIP
摘要:
The photoluminescence emission peak energy of GaN quantum dots was observed to shift to higher energy with decreasing quantum dot size. This effect was found to be a combination of a blueshift from the confinement-induced shift of the electronic levels and a redshift from the increased Coulomb energy induced by a compression of the exciton Bohr radius. From this observation, absolute values of the exciton binding energy as a function of quantum dot size are determined. ©1998 American Institute of Physics.
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