Surfactant effect of antimony addition to the morphology of self-catalyzed InAs1-x Sb x nanowires

被引：58

作者：

Anyebe, E. A. ^{[1
]}

Rajpalke, M. K. ^{[2
,3
]}

Veal, T. D. ^{[2
,3
]}

Jin, C. J. ^{[4
]}

Wang, Z. M. ^{[5
]}

Zhuang, Q. D. ^{[1
,5
]}

机构：

[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[2] Univ Liverpool, Stephenson Inst Renewable Energy, Liverpool L69 7ZF, Merseyside, England

[3] Univ Liverpool, Dept Phys, Liverpool L69 7ZF, Merseyside, England

[4] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China

[5] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China

来源：

NANO RESEARCH | 2015年 / 8卷 / 04期

基金：

中国国家自然科学基金; 英国工程与自然科学研究理事会;

关键词：

MBE; antimony; surfactant; self-catalyzed; InAsSb nanowire; morphology; MOLECULAR-BEAM EPITAXY; QUANTUM DOTS; INFRARED DETECTORS; PHASE-SEPARATION; GROWTH; SEGREGATION; HETEROSTRUCTURES; ATOMS; SI; SILICON;

D O I：

10.1007/s12274-014-0621-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of Sb addition on the morphology of self-catalyzed InAsSb nanowires (NWs) has been systematically investigated. InAs NWs were grown by molecular beam epitaxy with and without antimony (Sb) flux. It is demonstrated that trace amounts of Sb flux are capable of tuning the geometry of NWs, i.e., enhancing lateral growth and suppressing axial growth. We attribute this behavior to the surfactant effect of Sb which results in modifications to the kinetic and thermodynamic processes. A thermodynamic mechanism that accounts for Sb segregation in InAsSb NWs is also elucidated. This study opens a new route towards precisely controlled NW geometries by means of Sb addition.

引用

页码：1309 / 1319

页数：11

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