Metal-Semiconductor-Metal UV Detectors Using Transferrable Amorphous and Crystalline Zinc-Tin-Oxide Microsphere Monolayers
- Authors
- Jung, Uijin; Kim, Subin; Kim, Dohyun; Shin, Dong Su; Xian, Zhanpeng; Park, Jinsub
- Issue Date
- Jan-2020
- Publisher
- AMER CHEMICAL SOC
- Keywords
- zinc-tin-oxide; transferable monolayer; phase control; UV detector
- Citation
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v.8, no.1, pp.60 - 70
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING
- Volume
- 8
- Number
- 1
- Start Page
- 60
- End Page
- 70
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2854
- DOI
- 10.1021/acssuschemeng.9b03684
- ISSN
- 2168-0485
- Abstract
- Metal-semiconductor-metal UV photodetectors consisting of transferable zinc-tin-oxide (ZTO) microsphere (MS) monolayers with different phases and sizes are reported. From the experimental results, the crystallized Zn2SnO4 (c-ZTO)-MS-monolayer-based photodetectors present higher performance than amorphous ZnSnO3 (a-ZTO)-based photodetectors. The external quantum efficiencies of the a-ZTO- and c-ZTO-MS-based UV photodetectors are 16.7% (at 320 nm) and 580.9% (at 310 nm), respectively. Moreover, the UV-to-visible rejection ratios of the a-ZTO and c-ZTO are 20 (320 nm/400 nm) and 1484 (310 nm/400 nm), respectively, indicating that both fabricated ZTO MS UV photodetectors present great visible-blind properties. To further improve the optoelectronic device performance, the c-ZTO-MS-based UV photodetector is optimized using various sphere diameters, namely, 0.79, 0.99, 1.24, and 1.51 mu m. The best photodetecting properties are obtained for the 1.24 mu m c-ZTO MS detector, showing a 51.1-fold improvement in photocurrent compared with the lowest level c-ZTO-based detector. These results are attributed to the different oxygen-related defect ratios in the ZTO MSs. The reported transferable ZTO-MS-monolayer-based optoelectronic devices have the potential for novel optoelectronic applications.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 융합전자공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2854)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.