Self-powered diamond/β-Ga2O3 photodetectors for solar-blind imaging

Self-powered solar-blind photodetectors based on diamond/β-Ga 2 O 3 heterojunctions have been fabricated. Under zero bias, these photodetectors show a peak responsivity of 0.2 mA W −1 , and a sharp cutoff wavelength of 270 nm. The UV/visible rejection ratio is more than two orders of magnitude, indi...

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Bibliographic Details
Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 6; no. 21; pp. 5727 - 5732
Main Authors Chen, Yan-Cheng, Lu, Ying-Jie, Lin, Chao-Nan, Tian, Yong-Zhi, Gao, Chao-Jun, Dong, Lin, Shan, Chong-Xin
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 2018
Subjects
Diamonds
Gallium oxides
Heterojunctions
Image quality
Photometers
Power supplies
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Summary:Self-powered solar-blind photodetectors based on diamond/β-Ga 2 O 3 heterojunctions have been fabricated. Under zero bias, these photodetectors show a peak responsivity of 0.2 mA W −1 , and a sharp cutoff wavelength of 270 nm. The UV/visible rejection ratio is more than two orders of magnitude, indicating that these photodetectors respond mainly to solar-blind irradiation. These photodetectors can exhibit repeatability and stability without any external power supply. High quality images have been obtained using such a self-powered photodetector as a sensing pixel of an imaging system, and this study is the first report on the solar-blind imaging of Ga 2 O 3 based photodetectors. Self-powered solar-blind photodetectors based on diamond/β-Ga 2 O 3 heterojunctions have been fabricated and high quality solar-blind images have been realized.
ISSN:2050-7526
2050-7534
DOI:10.1039/c8tc01122b