Phonon-assisted excitonic absorption in diamond
Phonon-assisted excitonic absorption in diamond
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金刚石中的声子辅助激子吸收
DOI：
10.1103/physrevb.104.125204
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发表时间：
2021
影响因子：
3.7
通讯作者：
N. Naka
中科院分区：
文献类型：
--
作者：
K. Konishi;N. Naka
从理论和实验上研究了本征金刚石中激子的声子辅助光跃迁。良好的协议之间的吸收光谱测量和计算的基础上的声子耦合强度的第一性原理计算，只使用一个单一的可调参数。温度漂移和加宽通过伪Voigt函数分析开发的实验吸收光谱的衍生物。分离了激子在离散态和连续态的吸收系数，并讨论了不同声子模的贡献，从而从理论上推导出间接带隙半导体中金刚石中激子的声子辅助辐射率异常高的结论。这项研究扩展了二阶微扰理论的适用性，涉及电子-声子相互作用的材料重要的未来光子学和电力电子学。
The phonon-assisted optical transitions of excitons in intrinsic diamond have been investigated theoretically and experimentally. Excellent agreement is indicated between absorption spectra measured and calculated based on the phonon coupling strengths from first-principles calculations using just a single adjustable parameter. Temperature shift and broadening are incorporated via a pseudo-Voigt function analysis developed for the derivative of the experimental absorption spectra. The absorption coefficients of excitons in discrete and continuum states are separated and contributions from different phonon modes are discussed, which enable theoretical derivation of the exceptionally high phonon-assisted radiative rate of excitons in diamond among indirect-gap semiconductors. This study expands the applicability of the second-order perturbation theory involving electron-phonon interactions in materials important for future photonics and power electronics.
金刚石中束缚激子的声子辅助跃迁：镜面对称分析
影响因子：
3.7
作者：
Kubo Yoshiki;Takahata Mitsuyoshi;Temgoua Solange;Issaoui Riadh;Barjon Julien;Naka Nobuko
通讯作者：
Naka Nobuko
利用宽带太赫兹时域光谱研究金刚石中激子和自由载流子之间的详细平衡
影响因子：
4
作者：
Ichii T.;Hazama Y.;Naka N.;Tanaka K.
通讯作者：
Tanaka K.
金刚石中激子的扩散相关寿命和量子效率
影响因子：
3.7
作者：
Konishi K.;Akimoto I.;Isberg J.;Naka N.
通讯作者：
Naka N.