Many-body formulation of carriers capture time in quantum dots applicable in device simulation codes

被引：4

作者：

Vallone, Marco ^{[1
]}

机构：

[1] Politecn Torino, Dipartimento Elettron, I-10126 Turin, Italy

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 05期

关键词：

ELECTRON-CAPTURE; RELAXATION; GAIN;

D O I：

10.1063/1.3309838

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present an application of Green's functions formalism to calculate in a simplified but rigorous way electrons and holes capture time in quantum dots in closed form as function of carrier density, levels confinement potential, and temperature. Carrier-carrier (Auger) scattering and single LO-phonon emission are both addressed accounting for dynamic effects of the potential screening in the single plasmon pole approximation of the dielectric function. Regarding the LO-phonons interaction, the formulation evidences the role of the dynamic screening from wetting-layer carriers in comparison with its static limit, describes the interplay between screening and Fermi band filling, and offers simple expressions for capture time, suitable for modeling implementation. (C) 2010 American Institute of Physics. [doi:10.1063/1.3309838]

引用

页数：7

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