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P-type doped ambipolar polymer transistors by direct charge transfer from a cationic organic dye Pyronin B ferric chloride
- Authors
- Huseynova, Gunel; Xu, Yong; Yawson, Benjamin Nketia; Shin, Eul-Yong; Lee, Mi Jung; Noh, Yong Young
- Issue Date
- Dec-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Organic field effect transistors; Conjugated polymer; Doping; Cationic dyes; Charge carrier mobility
- Citation
- ORGANIC ELECTRONICS, v.39, pp 229 - 235
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- ORGANIC ELECTRONICS
- Volume
- 39
- Start Page
- 229
- End Page
- 235
- ISSN
- 1566-1199
1878-5530
- Abstract
- We report a facile way to improve organic field effect transistor (OFET) performance based on low concentration doping of diketopyrrolopyrrole-thieno[3,2-bIthiophene (DPPT-TT) solution by an organic cationic dye, Pyronin B (PyB). DPPT-TT OFETs show significantly high field effect mobilities (up to 3.5 cm(2)v(-1) s(-1)) by optimizing the doping ratio and solvent selection. The devices also exhibit better on! off ratio by suppression of n-channel characteristics. Ultraviolet photoelectron spectroscopy and UV vis absorption spectra revealed efficient p-type doping in PyB doped DPPT-TT films, which was confirmed by the Fermi level shifting toward the highest occupied molecular orbital and red shift of the absorption spectrum. (C) 2016 Elsevier B.V. All rights reserved.
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Related Researcher
- Nketia-Yawson, Benjamin
- College of Engineering (Department of Energy and Materials Engineering)