Optical properties of GaNAs and GaInAsN quantum wells

被引:58
作者
Potter, RJ [1 ]
Balkan, N
机构
[1] Univ Essex, Dept ESE, Photon Grp, Colchester C04 3SQ, Essex, England
[2] Univ Liverpool, Liverpool L69 3BX, Merseyside, England
关键词
D O I
10.1088/0953-8984/16/31/026
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We present an overview of our optical characterization work on dilute nitride quantum well (QW) samples. A simple model for calculating interband transition energies is constructed, tested against published k (.) p results and used to model experimental data. Steady state photoluminescence (PL), time-resolved PL and photomodulated reflectance measurements are utilized to characterize GaNAs/GaAs, GaInNAs/GaAs and InGaAs/GaAs QWs. The effects of carrier localization, hot-carrier relaxation, non-radiative recombination and the reduced bandgap temperature dependence of dilute nitrides are investigated. Emission from recombining hot carriers in a GaInNAs/GaAs QW is recorded and used to estimate the LO-phonon scattering energy. The addition of small fractions of N is found to have little effect on phonon energy, which is found to be homega = 29.7 meV.
引用
收藏
页码:S3387 / S3412
页数:26
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