Structural and electronic properties of zigzag and armchair WSe₂ nanotubes

详细信息    查看全文

• 作者：Ben-Ling Gao^a ; ^{jsblgao@163.com} ; San-Huang Ke^b ; ^{shke@tongji.edu.cn} ; Guang Song^a ; ^c ; Jun Zhang^a ; Lei Zhou^a ; Guan-Nan Li^a ; Feng Liang^a ; Yanzong Wang^a ; Chun Dang^a
• 关键词：WSe2 nanotubes ; Nanotube helicity ; Band-gap modulation ; Electronic structure
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：25 February 2017
• 年：2017
• 卷：695
• 期：Complete
• 页码：2751-2756
• 全文大小：1406 K
• 卷排序：695

文摘

The armchair nanotubes experience an indirect-direct gap change with n increasing. The zigzag nanotubes always possess a direct band gap regardless of n. The band gaps increase with diameter increasing. The varying range of the band gap can be from 0.44 to 1.98 eV. The strong modulation is due to large wall thickness and charge redistribution.