An Omnidirectionally Stretchable Photodetector Based on Organic-Inorganic Heterojunctions
- Authors
- Tran Quang Trung; Dang, Vinh Quang; Lee, Han-Byeol; Kim, Do-Il; Moon, Sungjin; Lee, Nae-Eung; Lee, Hoen
- Issue Date
- 18-10월-2017
- Publisher
- AMER CHEMICAL SOC
- Keywords
- omnidirectional stretchability; photodetector; organic-inorganic heterojunction; ZnO nanorods; stretchable optoelectronics
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.9, no.41, pp.35958 - 35967
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 9
- Number
- 41
- Start Page
- 35958
- End Page
- 35967
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/81884
- DOI
- 10.1021/acsami.7b09411
- ISSN
- 1944-8244
- Abstract
- Omnidirectionally stretchable photodetectors are limited by difficulties in designing material and fabrication processes that enable stretchability in multiaxial directions. Here, we propose a new approach involving an organic inorganic p-n heterojunction photodetector comprised of free-standing ZnO nanorods grown on a poly(3,4ethylenedioxythiophene)-polystyrene sulfonate transport layer coated on a three-dimensional micropatterned stretchable substrate containing bumps and valleys. This structure allows for efficient absorption of stretching strain. This approach allows the device to accommodate large tensile strain in all of the directions. The device behaves as a photogated p-n heterojunction photodetector in which current modulation was obtained by sensing the mechanisms that rely on photovoltage and photogating effects. The device exhibits a high photoresponse to UV light and reliable electrical performance under applied stretching in uniaxial and omniaxial directions. Furthermore, the device can be easily and conformally attached to a human wrist. This allowed us to investigate the response of the device to UV light during human activity.
- 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.