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- W4353094814 abstract "Metal–semiconductor (M–S) contact is a basic element in semiconductor integrated circuit. Recent studies on photodetectors extensively focus on M–S contact owing to the easy fabrication and superior performance. Here, we report a light–induced transition of charged carrier transport in planar Cu/Si–doped GaAs single crystal (Si:GaAs) symmetric double Schottky contacts. Different from conventional photodetector, illumination not only gains the carrier concentration but also changes the charged carrier transport mechanism at Cu/Si:GaAs contact. The light-induced transition of charged carrier transport is reflected by the change of shape of current–voltage (I–V) curve caused by illumination. By the construction of theoretical model and its fitting to experimental data, we point out that carrier transport mechanism at Cu/Si:GaAs contact changes from tunneling effect to thermionic emission by illumination. Among that, photovoltaic effect is the crucial driving force. This study presents a novel mechanism for converting optical signal to electrical signal by tailoring Schottky contact in photodetector, which provide a design prototype to new–type optoelectronic device." @default.
- W4353094814 created "2023-03-23" @default.
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- W4353094814 date "2023-04-01" @default.
- W4353094814 modified "2023-10-13" @default.
- W4353094814 title "Light–induced transition of charged carrier transport in symmetric metal–semiconductor–metal contacts" @default.
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- W4353094814 doi "https://doi.org/10.1016/j.rinp.2023.106384" @default.
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