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High-Performance Deep Ultraviolet Photodetector Based on NiO/?-Ga2O3 Heterojunction.


ABSTRACT: Ultraviolet (UV) photodetector has attracted extensive interests due to its wide-ranging applications from defense technology to optical communications. The use of wide bandgap metal oxide semiconductor materials is of great interest in the development of UV photodetector due to their unique electronic and optical properties. In this work, deep UV photodetector based on NiO/?-Ga2O3 heterojunction was developed and investigated. The ?-Ga2O3 layer was prepared by magnetron sputtering and exhibited selective orientation along the family of ([Formula: see text] 01) crystal plane after annealing. The photodetector demonstrated good performance with a high responsivity (R) of 27.43 AW-1 under a 245-nm illumination (27 ?Wcm-2) and the maximum detectivity (D*) of 3.14?×?1012 cmHz1/2?W-1, which was attributed to the p-NiO/n-?-Ga2O3 heterojunction.

SUBMITTER: Jia M 

PROVIDER: S-EPMC7036083 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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High-Performance Deep Ultraviolet Photodetector Based on NiO/β-Ga<sub>2</sub>O<sub>3</sub> Heterojunction.

Jia Menghan M   Wang Fang F   Tang Libin L   Xiang Jinzhong J   Teng Kar Seng KS   Lau Shu Ping SP  

Nanoscale research letters 20200222 1


Ultraviolet (UV) photodetector has attracted extensive interests due to its wide-ranging applications from defense technology to optical communications. The use of wide bandgap metal oxide semiconductor materials is of great interest in the development of UV photodetector due to their unique electronic and optical properties. In this work, deep UV photodetector based on NiO/β-Ga<sub>2</sub>O<sub>3</sub> heterojunction was developed and investigated. The β-Ga<sub>2</sub>O<sub>3</sub> layer was pr  ...[more]

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