Asymmetric growth on the polar surfaces of CdS ribbons

被引：17

作者：

Wang, Y ^{[1
]}

Wang, GZ ^{[1
]}

Yau, MY ^{[1
]}

To, CY ^{[1
]}

Ng, HL ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 407卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.03.139

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：

Cadmium sulfur ribbons were produced on an Au-coated Si substrate by chemical vapor deposition of CdS powder. The growth direction of the ribbons was [0 1 1 0]. Asymmetric growth had occurred on the +/-(0 0 0 1) planes. Two types of ribbons were found. In one type, saw-tooth structure was rooted on the active Cd-terminated (0 0 0 1) surface while the inert S-terminated (0 0 0 1) surface remained flat. In the second type, finer finger/saw-tooth pairs were found on one side, nano-finger-like structure was on the other. The nano-fingers were grown on some high-energy planes between the S-terminated (0 0 0 1) plane and the +/-(2 1 1 0) facets. This lateral asymmetric growth behavior was due to surface polarization. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：510 / 515

页数：6