Performance Optimization of Antimony Selenide Heterojunction Photodetectors in Underwater Imaging Systems
The exploitation,utilization and protection of marine resources is of great significance to the survival and development of human beings.Underwater optical communication is a technology that uses light to realize data transmission in underwater environment,which plays an important role in understanding the ocean and underwater environment.However,as the core of underwater optical communication system,photodetector is constrained by broadband response,water resistance and high detection rate.ZnO/Sb2Se3 heterojunction pho-todetectors prepared by short-range sublimation(Sb2Se3)and spin coating(ZnO)show excellent self-power op-tical detection performance at zero bias,with a light-dark current ratio of 4.42E+04 and a response spectrum ranging from 360 nm to 850 nm.The response rate is as high as 13.7 mA·W-1,which exceeds 4.3E+11 Jones.This work provides a reliable high-quality photodetector for underwater imaging systems,which will promote the advancement of marine science.
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