Journal
CRYSTALS
Volume 12, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/cryst12101427
Keywords
solar-blind photodetector; graphitic carbon electrode; gallium oxide
Funding
- National Natural Science Foundation of China [11904041, 51472038]
- Natural Science Foundation of Chongqing [cstc2020jcyj-msxmX0557, cstc2020jcyj-msxmX0533, cstc2019jcyjmsxmX0237, CSTB2022BSXMJCX0090]
- Science and Technology Research Project of Chongqing Education Committee [KJQN201900542, KJQN202000511, KJQN201800501]
- College Students Innovation and Entrepreneurship Training Program of Chongqing City [S202110637130, S202110637123, S202110637119, S202210637046, S202210637052]
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In this study, a high-response solar-blind UV photodetector was fabricated using a novel transparent electrode material, which exhibited high responsivity and excellent detectivity. The potential of transparent photodetector array in solar-blind imaging was also explored.
In recent years, transparent electrode materials have had a positive effect on improving the responsivity of photodetectors by increasing the effective illumination area of devices due to their high transmittance. In this work, by using radio frequency magnetron sputtering and simple mask technology, an amorphous Ga2O3-based solar-blind UV photodetector with graphitic carbon (C) electrodes was created. The device exhibits a high responsivity of 16.34 A/W, an external quantum efficiency of 7979%, and excellent detectivity of 1.19 x 10(13) Jones at room temperature under a light density of 5 mu w/cm(2). It has been proved that C electrodes can replace the traditional noble metal electrode. Additionally, the potential of the transparent photodetector array in solar-blind imaging is explored. We believe that the present study will pave the way for the preparation of a fully transparent and high-response solar-blind ultraviolet photodetector array.
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