Reduced electrical hysteresis of organic thin-film transistors based on small molecule semiconductor through an insulating polymer binder
- Authors
- Chae, Soosang; Lee, Tae Il; Oh, Jin Young
- Issue Date
- Mar-2022
- Publisher
- KOREAN INSTITUTE CHEMICAL ENGINEERS
- Keywords
- Organic Thin Film Transistors; TIPS-pentacene; Vertical Phase Separation
- Citation
- Korean Journal of Chemical Engineering, v.39, no.3, pp.499 - 503
- Journal Title
- Korean Journal of Chemical Engineering
- Volume
- 39
- Number
- 3
- Start Page
- 499
- End Page
- 503
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/83577
- DOI
- 10.1007/s11814-021-1005-z
- ISSN
- 0256-1115
- Abstract
- The electrical stability of organic thin film transistors (OTFTs) based on 6, 13-bis(triisopropylsilylethynyl) (TIPS) pentacene were improved by blending poly(α-methylstyrene) (PαMS) binder with the TIPS-pentacene. The blended semiconducting film is vertically phase-separated, which forms a TIPS-pentacene rich region at top surface due to its lower surface energy than PαMS, inducing interface modification at semiconducting layer and dielectric layer. The modified interface induces an increase in charge current density and a decrease in charge trap density, leading to efficiently reduced electrical hysteresis and increased field-effect mobility. © 2022, The Korean Institute of Chemical Engineers.
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