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Journal Article A New Poly(thienylenevinylene) Derivative with High Mobility and Oxidative Stability for Organic Thin‐Film Transistors and Solar Cells
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Authors
Bog Yu Lim, Kang Jun Baeg, Hyung Gu Jeong, Jang Jo, Hyung Soo Kim, Jeong Woo Park, Yong Young Noh, Doo Jin Vak, Jeong Ho Park, Ji Woong Park, Dong Yu Kim
Issue Date
2009-07
Citation
Advanced Materials, v.21, no.27, pp.2808-2814
ISSN
0935-9648
Publisher
WILEY-VCH Verlag GmbH & Co. KGaA
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1002/adma.200803700
Abstract
A study was conducted to demonstrate a high-performance organic thin-film transistor (OTFT) with a dithienyylethylene-containing alkyl thiophene copolymer, poly(1,2-(E)-bis[2-(5-bromo-3-dodecyl-2-thienyl)-5-thienyl]ethene) (PEVT12T). An unsubstituted dithienyylethylene unit was symmetrically inserted between dodecylthiophenes to conduct the investigations. It was also demonstrated that the introduction of alkyl groups as electron-releasing groups decreased the oxidation potential of the thiophene ring by approximately 0.20 V. PETV12T-based OTFTs showed a high charge-carrier mobility of 0.15 cm 2 V-1 s-1 with a relatively high oxidative stability. The thermal properties of PETV12T were also investigated using differential scanning calorimetry (DSC) with a scan rate of 10 °C min -1. It was observed that thermal behavior of PETV12T was similar to that of the high-performance liquid-crystalline conjugated polymers pBTTT and PQT.
KSP Keywords
Conjugated polymer(PFO-co-MEH-PPV), Differential scanning calorimetry(photo-DSC), Differential scanning calorimetry (dsc), First Stokes(S1), High Mobility, High performance, Organic thin-film transistors, Solar Cells, Thin-Film Transistor(TFT), alkyl thiophene(Poly), high charge-carrier mobility