Dynamics of excitons localized by stacking disorder in GaSe.
Dynamics of excitons localized by stacking disorder in GaSe.
复制标题
GaSe 中堆积无序局域化的激子动力学。
DOI：
10.1103/physrevb.35.2509
复制
发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Era
中科院分区：
文献类型：
--
作者：
Minami;Era
通过测量1.6 K时的能量分辨和时间分辨发光光谱，在皮秒时间域研究了层状化合物GaSe中由堆叠无序定域的激子的动力学。观测到的能量松弛率比二维动能损失理论所预测的要慢得多。我们提出了一个简单的局域激子的能量传递理论，它很好地解释了激子的实验时间响应。观察到的慢弛豫被解释为单声子辅助层间局域激子的转移。
The dynamics of the excitons localized by stacking disorder in the layered compound GaSe is investigated in the picosecond time domain by measuring energy-and time-resolved luminescence spectra at 1.6 K. The observed energy relaxation rate is much slower than expected from two-dimensional kinetic-energy-loss theory. We present a simple theory of energy transfer of the localized excitons which explains satisfactorily the experimental time response of the excitons. The observed slow relaxation is interpreted in terms of one-phonon-assisted transfer of localized excitons between layers.