Stochastic models of charge carrier dynamics in semiconducting nanosystems

被引：46

作者：

Barzykin, A. V. ^{[1
]}

Tachiya, M. ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, AIST, Tsukuba, Ibaraki 3058565, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 06期

关键词：

D O I：

10.1088/0953-8984/19/6/065105

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We discuss recent experiments on photoexcited charge carrier relaxation dynamics in semiconducting nanotubes and nanoparticles within the framework of the stochastic model. We conclude that the elementary excitations in these nanosystems are excitons. Since the average number of excitons per nanosystem is typically small and comparable to a fluctuation, the quantized character of the number of excitons in nanosystems turns out to be essential, with no sufficient evidence to reduce the stochastic model to a bulk description.

引用

页数：9

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