title: Self-catalyzed Growth of InAs Nanowires on InP Substrate.
abstract: We report on the self-catalyzed growth of InAs nanowires on InP substrate by metal-organic chemical vapor deposition. At a moderate V/III ratio, tapered nanowires are obtained, suggesting a strong surface diffusion effect. Dense twin faults are observed perpendicular to the nanowire growth direction due to the fluctuation of In atoms in the droplet originating from the surface diffusion effect. At a lower V/III ratio, the nanowires exhibit kinking, which is associated with a high adhesion due to a large sticking coefficient of TMIn. The twin faults are dramatically suppressed and even completely eliminated in the NW branch after kinking, which is attributed to a stable In supply with a negligible diffusion effect. This work provides a method for the fabrication of defect-free InAs nanowires.
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
authors.forename: Bang
authors.identifier: http://orcid.org/0000-0002-7254-6569
authors.initials: B
authors.lastname: Li
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Yan
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China. xzhang@bupt.edu.cn.
authors.forename: Xia
authors.initials: X
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Ren
keywords: Kink; Nanowires; Self-catalyzed; Vapor–liquid–solid (VLS)