Multiphonon‐assisted energy transfer between Yb 4f shell and InP host
Multiphonon‐assisted energy transfer between Yb 4f shell and InP host
复制标题
Yb 4f 壳层和 InP 主体之间的多声子辅助能量转移
DOI：
10.1063/1.358014
复制
发表时间：
1994
影响因子：
3.2
通讯作者：
Y. Horikoshi
中科院分区：
文献类型：
--
作者：
A. Taguchi;K. Takahei;Y. Horikoshi
在假设非辐射多声子过程辅助能量传递的前提下，研究了yb4f壳层与InP宿主之间的能量传递机制。根据光学和电学实验的结果，确定了参与能量传递的能量值。通过求解速率方程，得到了Yb壳层内发光衰变时间与温度的关系。计算结果与实验结果吻合较好。计算得到的Yb壳层内发光强度与温度的依赖关系与实验测量结果一致。这些结果有力地表明，声子的吸收和发射补偿了能量传递过程中的能量失配。计算还表明，热猝灭现象主要是由电子和空穴的复合能与激发态和基态之间的yb4f壳层能之间的能量不匹配所决定的。基于……
The energy transfer mechanism between an Yb 4f shell and an InP host was investigated, assuming that a nonradiative multiphonon process assists the energy transfer. The values of the energy involved in the energy transfer were determined from the results of optical and electrical experiments. Rate equations were solved to obtain the temperature dependence of the Yb intra‐4f‐shell luminescence decay time. The calculated results and the experimentally obtained temperature dependence agree well. The calculated temperature dependence of the Yb intra‐4f‐shell luminescence intensity also agrees with the experimental measurements. These results strongly suggest that phonon absorption and emission compensate the energy mismatch in the energy transfer processes. The calculations also indicate that the thermal quenching phenomenon is mainly determined by the energy mismatch between the recombination energy of an electron and a hole and the Yb 4f‐shell energy between the excited and ground states. On the basis of th...