Substantial enhancement of photoluminescence in CdSe nanocrystals by femtosecond pulse illumination

被引：14

作者：

Simurda, M ^{[1
]}

Nemec, P ^{[1
]}

Trojánek, F ^{[1
]}

Maly, P ^{[1
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, Prague 12116 2, Czech Republic

来源：

THIN SOLID FILMS | 2004年 / 453卷

关键词：

CdSe; semiconductor nanocrystals; chemical bath deposition;

D O I：

10.1016/j.tsf.2003.11.088

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on characterisation of the effect of femtosecond laser pulse illumination on photoluminescence (PL) properties of CdSe nanocrystalline films (diameter approx. 5 nm) prepared by chemical bath deposition technique on crystalline silicon substrate. The substantial PL efficiency enhancement (up to 20X) and modification of PL spectrum were dependent on ambient atmosphere and illumination intensity. We discuss the possible microscopic origin of the observed effect and we suggest the rate equation model to reproduce the experimental data. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：300 / 303

页数：4

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