题目：

Band gap modulation of Si-C binary core/shell nanowires by composition and ratio

作者：

Huilong Dong¹, Zhenyu Guo¹, Keith Gilmore², Chunmiao Du¹, Tingjun Hou¹, Shuit-Tong Lee¹ and Youyong Li¹

单位：

¹ Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, People’s Republic of China

² European Synchrotron Radiation Facility, BP 220, F-38047 Grenoble, Cedex, France

摘要：

Core/shell nanowires (CSNWs) composed of Si, C, and SiC are promising systems for optoelectronic devices. Through computational investigations, we find that the band gaps (Eg) of these nanowires can be controlled not only by changing their composition, but also by adjusting the core/shell thickness ratio. For Si/SiC or SiC/C CSNWs with a fixed total number of layers, the dependence of Eg on the core/shell thickness ratio shows a bowing effect. Eg can be tuned from a few eV all the way to zero. These investigations provide direction for designing optoelectronic devices based on Earth-abundant elements.

影响因子：

3.672

分区情况：

2区

链接：

http://iopscience.iop.org/0957-4484/26/27/275201/