首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Quantum confinement effect in <Emphasis Type="Italic">β</Emphasis>-SiC nanowires
Authors:Gang Peng  Xiaoyan Yu  Yan-Lan He  Gong-Yi Li  Yi-Xing Liu  Xinfang Zhang  Xue-Ao Zhang
Institution:1.College of Science,National University of Defense Technology,Changsha,China;2.School of Electronic & Communication Engineering,Guiyang University,Guiyang,China
Abstract:The quantum confinement effect is important in nanoelectronics and optoelectronics applications; however, there is a discrepancy between the theory of quantum confinement, which indicates that band-gap widening occurs only at small sizes, and experimental observations of band-gap widening in large-diameter nanowires (NWs). This paper reports an obvious blue shift of the absorption edge in the UV-visible absorption spectra of SiC NWs with diameters of 50–300 nm. On the basis of quantum confinement theory and high-resolution transmission electron microscopy images of SiC NWs, band-gap widening in SiC NWs with diameters of up to hundreds of nanometers is fully explained; the results could help to explain similar band-gap widening in other NWs with large diameters.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号