Scanning tunneling microscope excited cathodoluminescence from ZnS nanowires

被引：29

作者：

Ma, Dorothy Duo Duo

Lee, Shuit-Tong ^{[1
]}

Mueller, Peter

Alvarado, Santos F.

机构：

[1] City Univ Hong Kong, Ctr Super Diamond & Adv Films, COSDAF, Hong Kong, Hong Kong, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

[3] IBM Res GmbH, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland

来源：

NANO LETTERS | 2006年 / 6卷 / 05期

关键词：

D O I：

10.1021/nl052507j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electronic excitation spectrum of ZnS nanowires (NWs) is characterized by cathodoluminescence ( CL) excited using the tip of a scanning tunneling microscope as a highly localized and bright source of low-energy (150-350 eV) electrons with impinging power densities in the range of up to 60 kW/cm(2) or more. The CL spectra reveal significant differences when compared with the photoluminescence spectra of ZnS NWs. The differences can be associated with the properties of the surface region of the NWs, which are preferentially emphasized in the CL spectra owing to the small probing depth of low-energy electrons.

引用

页码：926 / 929

页数：4

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