A Study on UVC Photodetector Using Mixed-Cation Perovskite with High Detection Rate as Light-Absorption Layer
- Authors
- Hong, Soo Beom; Choi, Hyung Wook
- Issue Date
- Apr-2022
- Publisher
- MDPI
- Keywords
- high-performance photodetector; mixed-cation perovskite; post-treatment process
- Citation
- NANOMATERIALS, v.12, no.7
- Journal Title
- NANOMATERIALS
- Volume
- 12
- Number
- 7
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/84101
- DOI
- 10.3390/nano12071185
- ISSN
- 2079-4991
- Abstract
- In this study, a mixed-cation perovskite ultraviolet (UV) C photodetector was fabricated using a simple formamidinium iodide (FAI) post-treatment process. The fabricated device uses FA(x)MA(1-x)PbI(3) perovskite as a light-absorption layer and SnO2, which has high transmittance in the UVC wavelength region, as an electron-transport layer. The fabricated device exhibited a response of 50.8 mA/W, detectability of 4.47 x 10(13) Jones, and external quantum efficiency of 53%. Therefore, the approach used in this study is promising for many applications in the UVC wavelength region.
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