Spectral and time dependences of the energy transfer of bound optical excitations in GaP(N)
Spectral and time dependences of the energy transfer of bound optical excitations in GaP(N)
复制标题
GaP(N) 中束缚光学激发能量转移的光谱和时间依赖性
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
J. Geisz
中科院分区：
文献类型：
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作者：
T. Niebling;O. Rubel;W. Heimbrodt;W. Stolz;S. Baranovskii;P. Klar;J. Geisz
用时间分辨光谱方法研究了氮含量为2.1%的氮掺杂GaP块体样品中局域光激发能量转移的低温动力学。利用局域激子跳跃和能量弛豫的唯象理论，在纳秒到微秒的时间尺度上定量地描述了光致发光衰减的光谱和时间依赖性。通过实验和理论比较，确定了表征发光状态的微观参数。
Low-temperature kinetics of the energy transfer of localized optical excitations in a nitrogen-doped GaP bulk sample with a nitrogen content of 2.1% are studied by means of time-resolved spectroscopy. Both the spectral and time dependences of the photoluminescence decay are described quantitatively on a timescale from nanoseconds to a microsecond by a phenomenological theory of hopping and energy relaxation of localized excitons. The microscopic parameters, which characterize the luminescent states, are determined by comparison between experiment and theory.