Effects of the Surface Wettability of a Polymeric Insulator in a Solution-Processed Organic Transistor
- Authors
- Kim, Dong-Wook; Bae, Jin-Hyuk; Choi, Jong Sun; Park, Jaehoon
- Issue Date
- 2012
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Thin-film transistor; TIPS-pentacene; Polymeric insulator; Surface wettability
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.567, no.1, pp.50 - 56
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 567
- Number
- 1
- Start Page
- 50
- End Page
- 56
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/18240
- DOI
- 10.1080/15421406.2012.702380
- ISSN
- 1542-1406
- Abstract
- We investigated the effects of the surface wettability of two polymeric insulators in a 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-pentacene) thin-film transistor (TFT). The chemical solvent of TIPS-pentacene was more wettable on a poly(4-vinylphenol) (PVP) insulator than on a poly(vinylidenefluoride-trifluoroethylene) (PVDF-TrFE) insulator. TIPS-pentacene molecules formed large crystals on the PVDF-TrFE layer, resulting in high field-effect mobility for the TFT. In contrast, for the PVP case, the mobility largely varied with the processing temperature of a TIPS-pentacene film. These results demonstrate that the surface wettability of an insulator is important for the crystallization of a solution-processed organic semiconductor and the resulting TFT performance.
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Collections - College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
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