Enhanced photocurrent performance of partially decorated Au nanoparticles on ZnO nanorods based UV photodetector
- Authors
- Khan, Rizwan; Uthirakumar, Periyayya; Kim, Tae Hwan; Lee, In-Hwan
- Issue Date
- 7월-2019
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- ZnO-nanorods; Au-nanoparticles; Surface plasmons; UV photodetector; Photocurrent
- Citation
- MATERIALS RESEARCH BULLETIN, v.115, pp.176 - 181
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS RESEARCH BULLETIN
- Volume
- 115
- Start Page
- 176
- End Page
- 181
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/64218
- DOI
- 10.1016/j.materresbull.2019.03.017
- ISSN
- 0025-5408
- Abstract
- The surface modification is essentially required to develop a variety of hybrid zinc oxide (ZnO) nanostructures for fabricating optoelectronic devices. A facile solution method was proposed to prepare the relatively low and high aspect ratio ZnO nanorods (NRs) and subsequently decorated with gold nanoparticles (Au NPs) partially on the surface of ZnO NRs. The Au-ZnO NRs exhibited an enhanced band-edge emission due to the surface plasmon resonance quenching of deep level defect emission, as compared to bare ZnO NRs. The UV photodetector with the relatively low aspect ratio Au-ZnO NRs showed a lower photocurrent in dark. However, after UV light illumination, a remarkable enhancement in photocurrent owing to the Au modification was observed, which leads a strong absorption and an improved interfacial charge separation process. Hence, the relatively low aspect ratio Au-ZnO NRs provides a channel for fabricating a high performance UV photodetector, in the near future.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.