Journal
OPTICS LETTERS
Volume 45, Issue 16, Pages 4531-4534Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.399955
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Funding
- Institute for Information and Communications Technology Promotion [2017-0-00432]
- National Research Foundation of Korea [2019R1A2B5B02003419]
- Korea Institute of Science and Technology [2E30100, 2E30420, 2V07850]
- National Research Foundation of Korea [2019R1A2B5B02003419, 2E30100] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Two-dimensional (2D) layered van der Waals atomic crystals exhibit many fascinating properties. In particular, their dangling-bond-free nature enables different 2D materials to be stacked on the top of each other without restraint, thereby forming a heterostructure. In this study, a high-performance all 2D WSe2/MoS2 heterojunction photodiode with a graphene contact as an electrode is demonstrated. It exhibits an excellent electrical performance (ideality factor of 1.2 and rectification ratio of 10(4)), a broad spectral photoresponse (from 450 to 980 nm), and a remarkable linearity with a linear dynamic range of 113 dB. Finally, a self-powered single pixel imager is demonstrated as a feasible optoelectronic application. (C) 2020 Optical Society of America
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