A voltage-driven dual-mode MoSe2 photodetector with graphene as van der Waals contact
Zhonghui Xia,
Sujuan Wang,
Xueting Liu
et al.
Abstract:Two-dimensional (2D) molybdenum selenide (MoSe2) is promising for developing photodetectors for harvesting lights from UV to near infrared band, while high responsivity and fast response speed are difficult to be simultaneously realized. Herein, we present a dual-mode MoSe2 photodetector with asymmetric electrodes, in which Graphene and Cr metal are utilized as Ohmic and Schottky contacts, respectively. The photodiode possesses a fabulous Schottky characteristic with rectification ratio of ~250 and low dark cu… Show more
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