Flexible and Transparent Organic Phototransistors on Biodegradable Cellulose Nanofibrillated Fiber Substrates
- Authors
- Park, Junsu; Seo, Jung-Hun; Yeom, Seung-Won; Yao, Chunhua; Yang, Vina W.; Cai, Zhiyong; Jhon, Young Min; Ju, Byeong-Kwon
- Issue Date
- 7-5월-2018
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- biodegradation; flexible sensors; indium zinc oxide electrodes; organic phototransistors; thin-film transistors
- Citation
- ADVANCED OPTICAL MATERIALS, v.6, no.9
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED OPTICAL MATERIALS
- Volume
- 6
- Number
- 9
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/75563
- DOI
- 10.1002/adom.201701140
- ISSN
- 2195-1071
- Abstract
- This work demonstrates flexible, transparent phototransistors that can detect visible light with nontoxic organic active materials on biodegradable substrates toward environment-friendly electronics. The molybdenum trioxide (MoO3)-buffered indium zinc oxide as high-performance hole injector and transparent electrodes is applied for the first time to organic phototransistors on cellulose nanofibrillated fiber substrates to achieve more than 70% of transmittance in the visible range (400-750 nm) while showing high conductivity under multiple bendings. Excellent electrical switching characteristics are obtained from transistors using a pentacene active layer with a saturation mobility value of 1.40 cm(2) V-1 s(-1). The phototransistors, which can detect visible light and perform in two operation modes, exhibit a maximum responsivity of 54.8 A W-1 and a photosensitivity of 24.4 under white light illumination at an intensity of 0.12 mW cm(-2). Moreover, the devices show a stable operation during mechanical bending tests with radii ranging from 100 to 5 mm and cyclic bending tests of up to 2000 cycles at a fixed radius of 5 mm. The results suggest that these flexible phototransistors with properties of transparency and biodegradability have considerable potential for use in low-cost and eco-friendly disposable sensor systems.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.