期刊
NANOSCALE
卷 10, 期 35, 页码 16805-16811出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr05291c
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资金
- National Natural Science Foundation of China [61204011, 51761145025, 61574011]
- Natural Science Foundation of Beijing, China [4182015]
- development foundation for optoelectronics technology laboratory, Ministry of Education [PXM 2018_014204_500020]
- Shanxi Scholars program
The van der Waals (vdW) heterostructure, made up of two dissimilar two-dimensional materials held together by van der Waals interactions, has excellent electronic and optoelectronic properties as it provides a superior interface quality without the lattice mismatch problem. Here, we report the development and photoresponse characteristics of a p-n diode based on a stacked black phosphorus (BP) and rhenium disulfide (ReS2) heterojunction. The heterojunction showed a clear gate-tunable rectifying behavior similar to that of the conventional p-n junction diode. Under UV illumination, the BP/ReS2 p-n diode displayed a high photoresponsivity of 4120 A W-1 and we were able to modify the photoresponse properties by adjusting the back gate voltage. Moreover, an investigation of various channel lengths yielded the highest photoresponsivity of 11 811 A W-1 for a BP length of 1 mu m. These results suggested vdW 2D materials to be promising for developing advanced heterojunction devices for nano-optoelectronics.
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