The effect of V/III ratio and catalyst particle size on the crystal structure and optical properties of InP nanowires

被引：96

作者：

Paiman, S. ^{[1
]}

Gao, Q. ^{[1
]}

Tan, H. H. ^{[1
]}

Jagadish, C. ^{[1
]}

Pemasiri, K. ^{[2
]}

Montazeri, M. ^{[2
]}

Jackson, H. E. ^{[2
]}

Smith, L. M. ^{[2
]}

Yarrison-Rice, J. M. ^{[3
]}

Zhang, X. ^{[4
,5
]}

Zou, J. ^{[4
,5
]}

机构：

[1] Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia

[2] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[3] Miami Univ, Dept Phys, Oxford, OH 45056 USA

[4] Univ Queensland, Sch Engn, Brisbane, Qld 4072, Australia

[5] Univ Queensland, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 22期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

INDIUM-PHOSPHIDE NANOWIRES; III-V NANOWIRES; GAAS NANOWIRES; GROWTH MECHANISMS; BUILDING-BLOCKS; PHOTOLUMINESCENCE; SUPERLATTICES; IONICITY; DEFECTS; EPITAXY;

D O I：

10.1088/0957-4484/20/22/225606

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

InP nanowires were grown on (1 1 1) B InP substrates by metal-organic chemical vapour deposition in the presence of colloidal gold particles as catalysts. Transmission electron microscopy and photoluminescence measurements were carried out to investigate the effects of V/III ratio and nanowire diameter on structural and optical properties. Results show that InP nanowires grow preferably in the wurtzite crystal structure than the zinc blende crystal structure with increasing V/III ratio or decreasing diameter. Additionally, time-resolved photoluminescence (TRPL) studies have revealed that wurtzite nanowires show longer recombination lifetimes of similar to 2500 ps with notably higher quantum efficiencies.

引用

页数：7

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