纳米线
之字形的
材料科学
纳米技术
拉曼光谱
光电流
数码产品
堆积
光电子学
半导体
硫族元素
结晶学
化学
光学
物理化学
物理
有机化学
数学
几何学
作者
Hong En Lim,Zheng Liu,Juan Kim,Jiang Pu,Hiroshi Shimizu,Takahiko Endo,Yusuke Nakanishi,Taishi Takenobu,Yasumitsu Miyata
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2021-12-16
卷期号:5 (2): 1775-1782
被引量:6
标识
DOI:10.1021/acsanm.1c03160
摘要
The dominant quantum confinement and edge effects in one-dimensional (1D) transition-metal dichalcogenide (TMDC) nanoribbons have given rise to physical properties useful in electronic, optoelectronic, and catalytic applications. Numerous methods of synthesizing TMDC nanoribbons via top-down or bottom-up methods have already been developed. However, controlling the mass growth of these materials remains challenging. We herein describe a predefined growth of zigzag-type TMDC nanoribbons using WTe atomic wires as template precursors. Bundles of WTe wires were annealed in the presence of chalcogen vapors to induce structural transformation into nanoribbons of layered WS2, WSe2, or WTe2. Depending on the stacking arrangement of the WTe wires, vertically or horizontally aligned nanoribbons were generated, forming random or unidirectional networks. The resultant WSe2 nanoribbons showed anisotropic optical responses in Raman and photocurrent measurements, indicating their 1D nature. The present results provide a path for not only the possible structural engineering of TMDC nanoribbons but also their application in sophisticated 1D electronic and optoelectronic devices.
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