期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 21, 页码 24093-24101出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c02166
关键词
heterostructure; 2D materials; transition metal dichalcogenides; CVD; photodetector
资金
- National Natural Science Foundation of China [51672076, 51872198, 51890865, 51772088]
- Natural Science Foundation of Tianjin [18JCYBJC42500]
Van der Waals (vdW) heterostructures are the fundamental blocks for two-dimensional (2D) electronic and optoelectronic devices. In this work, a high-quality 2D metal-semiconductor NiTe2/MoS2 heterostructure is prepared by a two-step chemical vapor deposition (CVD) growth. The back-gated field-effect transistors (FETs) and photodetectors based on the heterostructure show enhanced electronic and optoelectronic performance than that of a pristine MoS2 monolayer, owing to the better heterointerface in the former device. Especially, this photodetector based on the metal-semiconductor heterostructure shows 3 orders faster rise time and decay time than that of the pristine MoS2 under the same fabrication procedure. The enhancement of electronic behavior and optoelectronic response by the epitaxial growth of metallic vdW layered materials can provide a new method to improve the performance of optoelectronic devices.
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