Low dimensional GaS paper-based photodetector with high responsivity
With the discovery of graphene,two-dimensional materials have attracted increasing at-tention in the field of scientific research due to their unique physical and chemical properties.A large family of two-dimensional materials starting from graphene,such as MoS2,WS2,GaS,etc.have been showing the considerable application prospects applied in production and life for their good photoelec-tric properties and high mobility in devices.In this paper,the principle of photoconductivity effect was briefly discussed,the graphite electrode was drawn by pencil drawing method,and the GaS pa-per-based photodetector was prepared by means of liquid phase ultrasonic dispersion coating of bulk material.The photodetector had photoelectric response in visible light range and good mechanical re-peatability.The preparation of paper-based photodetector in this paper was of great practical signifi-cance to the teaching of basic physics and semiconductor physics in colleges and universities,and was helpful for students to better understand the principle of photoconductive effect.Paper-based photode-tector also reduced the production cost and helps to improve the hands-on ability of college students.
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