Radiative decay and phonon scattering of biexcitons in CuCl.
Radiative decay and phonon scattering of biexcitons in CuCl.
复制标题
CuCl 中双激子的辐射衰变和声子散射。
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
M. Kuwata
中科院分区：
文献类型：
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作者：
Hidefumi Akiyama;Takahiro Kuga;Masahiro Matsuoka;M. Kuwata
我们研究了在 4char21{}65 K 下 CuCl 中双激子发射的光谱和时间行为，该发射是使用高重复率 (82 MHz) 皮秒可调谐紫外光在弱激发条件下通过双光子吸收产生的。获得了双激子的带间弛豫率和带内弛豫率的温度依赖性。这些弛豫分别归因于激子的辐射衰变和单声声子散射。结果发现，双激子的辐射寿命较短，为50 ps，变形势较小，为0.72 eV。
We have studied the spectra and the temporal behavior of the emissions from biexcitons in CuCl at 4char21{}65 K created via two-photon absorption under weak-excitation conditions using high-repetition-rate (82-MHz) picosecond tunable uv light. Temperature dependences of the interband- and the intraband-relaxation rate of the biexciton are obtained. These relaxations are ascribed to radiative decay to excitons and to single-acoustic-phonon scattering, respectively. It is found that the radiative lifetime of the biexciton is short, 50 ps, and its deformation potential is small, 0.72 eV.