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学者姓名:王辰熙

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High-performance, energy-efficient graphene/Ga2O3 heterojunction solar-blind photodetectors enhanced by carrier-carrier scattering SCIE
期刊论文 | 2025 , 192 | OPTICS AND LASER TECHNOLOGY
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Abstract :

Conventional Ga2O3-based solar-blind photodetectors typically require a high bias voltage for efficient operation, leading to significant energy consumption. To address this, we propose an alternative approach using MOCVDgrown homoepitaxial (3-Ga2O3 thin films on (100) Sn-doped (3-Ga2O3 wafer to develop photodetectors with ultralow bias and high gain. A graphene/ Ga2O3 heterojunction device was fabricated, exhibiting an exceptionally low dark current of 0.1nA and a photocurrent ratio of 104 at -5 V, along with a suppression ratio (R254nm/R405nm) of 1800 at 0 V. By leveraging graphene's carrier-carrier scattering and Ga2O3 ' s UV absorption, the device achieved a responsivity increase from 0.04 mA/W (0 V) to 30 mA/W (-0.5 V), equivalent to a 73944 % enhancement, while the detectivity improved by 1096 %, reaching 2.68 x 1012 Jones. This work provides insights into the development of highly sensitive, low-power solar-blind UV photodetectors.

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Detectivity Detectivity Heterojunction Heterojunction Homoepitaxial Ga 2 O 3 Homoepitaxial Ga 2 O 3 Responsivity Responsivity Solar-blind photodetectors Solar-blind photodetectors

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GB/T 7714 Zhuang, Jiachang , Jia, Lemin , Lu, Yaoping et al. High-performance, energy-efficient graphene/Ga2O3 heterojunction solar-blind photodetectors enhanced by carrier-carrier scattering [J]. | OPTICS AND LASER TECHNOLOGY , 2025 , 192 .
MLA Zhuang, Jiachang et al. "High-performance, energy-efficient graphene/Ga2O3 heterojunction solar-blind photodetectors enhanced by carrier-carrier scattering" . | OPTICS AND LASER TECHNOLOGY 192 (2025) .
APA Zhuang, Jiachang , Jia, Lemin , Lu, Yaoping , Zheng, Zhenjie , Li, Titao , Zhu, Shoudong et al. High-performance, energy-efficient graphene/Ga2O3 heterojunction solar-blind photodetectors enhanced by carrier-carrier scattering . | OPTICS AND LASER TECHNOLOGY , 2025 , 192 .
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