Excitonic luminescence up to room temperature in a ZnSe/MgS superlattice
作者:
Hiroyuki Nashiki,
Ikuo Suemune,
Hidekazu Kumano,
Hideki Suzuki,
Toshio Obinata,
Katsuhiro Uesugi,
Jun’ichiro Nakahara,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 70,
issue 18
页码: 2350-2352
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.118867
出版商: AIP
数据来源: AIP
摘要:
Optical properties of a ZnSe/MgS superlattice (SL) were studied by reflection and photoluminescence (PL) spectroscopies. Excitonic structures were clearly observed in the reflection spectra up to room temperature, and the exciton absorption peak energy and linewidth were well coincident with the PL peak energy and linewidth. The origin of the lowest luminescence peak was indicated to be C1-HH1 exciton up to room temperature. The lineshape broadening due to longitudinal-optical-phonon scattering of excitons is much decreased in this SL compared to bulk ZnSe. ©1997 American Institute of Physics.
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