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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
- Project Code
- 08MC4100, Development of Next Generation RFID Technology for Item Level Applications, Chae Jong- Suk
- 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