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- W4385968530 abstract "Solar-blind UV photodetectors have outstanding reliability and sensitivity in flame detection without interference from other signals and response quickly. Herein, we fabricated a solar-blind UV photodetector based on a La2O3/ε-Ga2O3 p-n heterojunction with a typical type-II band alignment. Benefiting from the photovoltaic effect formed by the space charge region across the junction interface, the photodetector exhibited a self-powered photocurrent of 1.4 nA at zero bias. Besides, this photodetector demonstrated excellent photo-to-dark current ratio of 2.68 × 104 under 254 nm UV light illumination and at a bias of 5 V, and a high specific detectivity of 2.31 × 1011 Jones and large responsivity of 1.67 mA/W were achieved. Importantly, the La2O3/ε-Ga2O3 heterojunction photodetector can rapidly respond to flames in milliseconds without any applied biases. Based on the performances described above, this novel La2O3/ε-Ga2O3 heterojunction is expected to be a candidate for future energy-efficient fire detection." @default.
- W4385968530 created "2023-08-19" @default.
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- W4385968530 date "2023-08-18" @default.
- W4385968530 modified "2023-10-06" @default.
- W4385968530 title "Comprehensive Study on Ultra-Wide Band Gap La<sub>2</sub>O<sub>3</sub>/ε-Ga<sub>2</sub>O<sub>3</sub> p–n Heterojunction Self-Powered Deep-UV Photodiodes for Flame Sensing" @default.
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- W4385968530 doi "https://doi.org/10.1021/acsami.3c07597" @default.
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