Toward Industrial Production of a High-Performance Self-Powered Ultraviolet Photodetector Using Nanoporous Al-Doped ZnO Thin Films
- Authors
- HOANG, TRAN MANH; Nguyen, Thi My Huyen; Bark, Chung Wung
- Issue Date
- Sep-2023
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS OMEGA, v.8, no.38, pp 35343 - 35350
- Pages
- 8
- Journal Title
- ACS OMEGA
- Volume
- 8
- Number
- 38
- Start Page
- 35343
- End Page
- 35350
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/89462
- DOI
- 10.1021/acsomega.3c05266
- ISSN
- 2470-1343
- Abstract
- Al-doped ZnO (AZO) thin films are effective n-type semiconductors for ultraviolet (UV) detection because of their low cost, high electron mobility, and high sensitivity to UV light, especially in the UVA spectrum. However, a reasonable compromise between performance (such as sensitivity, detectivity, and response time) and fabrication ease remains an obstacle to the practicability of AZO-based UV photodetectors. To address this issue, we propose an efficient strategy to achieve a large AZO photoactive area for outstanding performance, along with a facile sol-gel method. Consequently, the device exhibits a superb on/off ratio of >10(4), a high detectivity of 1.85 x 10(12) Jones, and a fast response speed under 365 nm UVA illumination without external energy consumption. Hence, this study suggests a self-powered and high-performance nanoporous AZO-based UVA detector with an environmentally friendly scalable process that satisfies industrial production requirements for numerous practical UV-detection applications.
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