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Infrared photovoltaic detector based on p-GeTe/n-Si heterojunction
Yiqun Zhao1,2, Libin Tang3,4,5, Shengyi Yang6
1School of Physics, Beijing Institute of Technology, Beijing, 100081, China.
Abstract:
GeTe is an important narrow bandgap semiconductor material and has found application in the fields of phase change storage as well as spintronics devices. However, it has not been studied for application in the field of infrared photovoltaic detectors working at room temperature. Herein, GeTe nanofilms were grown by magnetron sputtering technique and characterized to investigate its physical, electrical, and optical properties. A high-performance infrared photovoltaic detector based on GeTe/Si heterojunction with the detectivity of 8 × 1011 Jones at 850 nm light irradiation at room temperature was demonstrated.
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