Photoresponsive ambipolar transport characteristics of organic thin film transistors using soluble HB-ant-THT and PCBM composites
- Authors
- Yang, Seung Ho; Cho, Mi Yeon; Jo, Seong Gi; Jung, Jin Sun; Jung, Ki Hwa; Bae, Suk Young; Choi, Dong Hoon; Kim, Sangsig; Joo, Jinsoo
- Issue Date
- Mar-2012
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Photovoltaic effect; HB-ant-THT; PCBM; Ambipolar transistor; Organic thin film transistor; Photoresponse electrical characteristics
- Citation
- SYNTHETIC METALS, v.162, no.3-4, pp.332 - 336
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 162
- Number
- 3-4
- Start Page
- 332
- End Page
- 336
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/105395
- DOI
- 10.1016/j.synthmet.2011.12.014
- ISSN
- 0379-6779
- Abstract
- We report on the photoresponsive ambipolar transport characteristics of organic thin film transistors (OTFTs) with two different types of electrodes using composites of soluble p-type x-shaped small molecules, 5,5'-(9,10-bis((4-hexylphenyl)ethynyl) anthracene-2,6-diyl)bis(ethyne-2,1-diyl)bis(2-hexylthiophene) (NB-ant-TNT) and n-type molecules, (6.6)-phenyl-C-61-butyric acid methyl ester (PCBM). Composites of HB-ant-THT and PCBM with varying concentration ratios were spin-coated as an active layer and thermal annealing was performed to increase the crystallinity of the active layer. The ambipolar transport characteristics were observed by applying the gate bias in OTFTs with a Au-Au electrode. With increasing the concentration of n-type PCBM, the hole mobility decreased while the electron mobility increased. We observed that the photocurrent in the OTFTs increased upon light irradiation. Ambipolar OTFTs prepared with Au-Al electrodes showed weak photovoltaic effect, and the power conversion efficiency of the devices increased with increasing the PCBM concentration. (C) 2011 Elsevier B.V. All rights reserved.
- 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
- College of Science > Department of Physics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.