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- W4385956146 abstract "Abstract Persistent photoconductivity deeply affects the performance of the photodetector, and has been studied in a variety of semiconductor optoelectronic devices. In this work, AlGaN/GaN metal-heterojunction-metal (MHM) ultraviolet (UV) detectors and GaN metal-semiconductor-metal (MSM) ultraviolet detectors were prepared using transverse Schottky contacts, and characterized at different temperatures, light intensity and bias voltage. The two-dimensional electron gas (2-DEG) at the Schottky heterojunction of AlGaN and GaN is used to generate high-speed electron mobility, which significantly improves the response speed and responsivity of photogenerated carriers. Under the illumination of 365 nm center ultraviolet light with an intensity of 4.4 mW/cm 2 , the photocurrent can reach 434 μA-MHM and 38 μA-MSM (25 °C), and the attenuation rate increase by 2.8 times, 5 times and 3.7 times with temperature (25 °C-250 °C), bias voltage (5/10/15 V), and light intensity (0.33/1.1/4.4 mW/cm 2 ), respectively, and the attenuation rate reaches 50∼80 times." @default.
- W4385956146 created "2023-08-18" @default.
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- W4385956146 date "2023-08-01" @default.
- W4385956146 modified "2023-10-16" @default.
- W4385956146 title "Photoelectric properties and persistent photoconductivity of GaN-based ultraviolet photodetectors" @default.
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- W4385956146 doi "https://doi.org/10.1088/1742-6596/2563/1/012032" @default.
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