Tunable Photoresponse in 2D WTe2/MoS2 Van der Waals Heterojunctions

被引：13
作者：
Li, Luji [1 ,2 ]
Zhang, Gaojie [1 ,2 ]
Wu, Hao [1 ,2 ]
Yang, Li [1 ,2 ]
Gao, Pengfei [1 ,2 ]
Zhang, Shanfei [1 ,2 ]
Wen, Xiaokun [1 ,2 ]
Zhang, Wenfeng [1 ,2 ]
Chang, Haixin [1 ,2 ,3 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Inst Quantum Sci & Engn, Wuhan 430074, Peoples R China
[3] Guangxi Univ Sci & Technol, Ctr Mat Sci & Engn, Liuzhou 545006, Peoples R China
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2021年 / 125卷 / 19期
基金：
中国国家自然科学基金;
关键词：
THERMAL-CONDUCTIVITY; HIGH-RESPONSIVITY; BROAD-BAND; PHOTODETECTORS; EVOLUTION; RAMAN;
D O I：
10.1021/acs.jpcc.1c01162
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：
Weyl semimetals haveattracted extensive research interests due to their unique topological properties. However, photoelectric devices based on pristine semimetals with large electrical conductivity are hard to detect especially under weak light. Here, with the help of MoS2, a stable van der Waals semiconductor, WTe2/MoS2 van der Waals heterojunctions are designed to successfully realize stable photoresponse from visible light to near-infrared. Tunable photocurrent is observed compared to pristine MoS2 with faster response under the effect of semimetal WTe2. Our study illustrates the great potential of WTe2 and other topological semimetals in photodetectors.
引用
收藏
页码：10639 / 10645
页数：7
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