Decay dynamics of visible luminescence in amorphous silicon nanoparticles

被引：32

作者：

Kanemitsu, Y ^{[1
]}

Fukunishi, Y ^{[1
]}

Kushida, T ^{[1
]}

机构：

[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 02期

关键词：

D O I：

10.1063/1.126927

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the recombination dynamics of carriers in amorphous silicon (a-Si) nanoparticles prepared by electrochemical anodization of hydrogenated a-Si films. The photoluminescence (PL) lifetime of the fast-decay component in a-Si nanoparticles is shorter than that in crystalline silicon (c-Si) nanoparticles. The energy dependence of the PL lifetime in a-Si nanoparticles is different from that in c-Si nanoparticles. The PL decay dynamics of a-Si nanoparticles is determined by recombination processes of carriers localized in the band-tail state. The origin of the blueshift of the PL spectrum in a-Si nanoparticles will be discussed. (C) 2000 American Institute of Physics. [S0003-6951(00)00728-2].

引用

页码：211 / 213

页数：3

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