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Sun, J. (author), Zhang, Shuo (author), Zhan, Teng (author), Liu, Zewen (author), Wang, Junxi (author), Yi, Xiaoyan (author), Li, Jinmin (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)A high responsivity and controllable recovery ultraviolet (UV) photodetector based on a tungsten oxide (WO<sub>3</sub>) gate AlGaN/GaN heterostructure with an integrated micro-heater is reported for the first time. The WO<sub>3</sub>nanolayer was deposited by physical vapor deposition (PVD) for deep UV absorption and the micro-heater was...journal article 2020
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Sun, J. (author), Zhan, Teng (author), Liu, Zewen (author), Wang, Junxi (author), Yi, Xiaoyan (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)This paper demonstrates a method to reduce the decay time in AlGaN/GaN photodetectors by a pulsed heating mode. A suspended AlGaN/GaN heterostructure photodetector integrated with a micro-heater is fabricated and characterized under ultraviolet illumination. We have observed that the course of persistent photoconductivity was effectively...journal article 2019
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Sun, J. (author), Zhan, Teng (author), Liu, Zewen (author), Wang, Junxi (author), Yi, Xiaoyan (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)A suspended WO<sub>3</sub>-gate AlGaN/GaN heterostructure photodetector integrated with a micro-heater is micro-fabricated and characterized for ultraviolet photo detection. The transient optical characteristics of the photodetector at different temperatures are studied. The 2DEG-based photodetector shows a recovery (170 s) time under 240 nm...journal article 2019