Visible-to-near-infrared photodetector based on graphene–MoTe<sub>2</sub>–graphere heterostructure<xref rid="cpb_28_11_117802fn1" ref-type="fn">*</xref><fn id="cpb_28_11_117802fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 21405109) and the Seed Foundation of State Key Laboratory of Precision Measurement Technology and Instruments, China (Pilt No. 1710).</p></fn>

Visible-to-near-infrared photodetector based on graphene–MoTe₂–graphere heterostructure**

Project supported by the National Natural Science Foundation of China (Grant No. 21405109) and the Seed Foundation of State Key Laboratory of Precision Measurement Technology and Instruments, China (Pilt No. 1710).

Hu Rui-Xue, Ma Xin-Li, An Chun-Ha, Liu Jing^†

(a) Schematic diagram of graphene–MoTe₂–graphene heterostructure. (b) Optical image of heterostructure, with scale bar being 5 μm. Thickness of MoTe₂ and two graphene are measured by AFM to be 15 nm, 5 nm, and 8 nm, respectively. (c) Raman spectra for MoTe_2, and (d) few-layer graphene in the heterostructure. (e) Transfer curve of the heterostructure on a linear scale. Inset shows transfer curve in logarithmic coordinate system. (f) Output characteristics of device.