Self-directed growth of AlGaAs core-shell nanowires for visible light applications

被引：70

作者：

Chen, Chen

Shehata, Shyemaa

Fradin, Cecile

LaPierre, Ray ^{[1
]}

Couteau, Christophe

Weihs, Gregor

机构：

[1] McMaster Univ, Ctr Emerging Device Technol, Dept Engn Phys, Hamilton, ON L8S 4L7, Canada

[2] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[3] McMaster Univ, Dept Biochem & Biomed Sci, Hamilton, ON L8S 4M1, Canada

[4] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada

来源：

NANO LETTERS | 2007年 / 7卷 / 09期

关键词：

D O I：

10.1021/nl070874k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Al0.37Ga0.63As nanowires (NWs) were grown in a molecular beam epitaxy system on GaAs(111)B substrates. Micro-photoluminescence measurements and energy dispersive X-ray spectroscopy indicated a core-shell structure and Al composition gradient along the NW axis, producing a potential minimum for carrier confinement. The core-shell structure formed during growth as a consequence of the different Al and Ga adatom diffusion lengths.

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收藏

页码：2584 / 2589

页数：6

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