期刊
KOREAN JOURNAL OF CHEMICAL ENGINEERING
卷 39, 期 3, 页码 499-503出版社
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-021-1005-z
关键词
TIPS-pentacene; Vertical Phase Separation; Organic Thin Film Transistors
资金
- Kyung Hee University [KHU-20182218]
- Gachon University [GCU-2018-0364]
By blending PαMS binder with TIPS-pentacene, the electrical stability of organic thin film transistors (OTFTs) was improved through the formation of a vertically phase-separated semiconducting film. This modification induced interface changes, resulting in increased charge current density, decreased charge trap density, reduced electrical hysteresis, and increased field-effect mobility.
The electrical stability of organic thin film transistors (OTFTs) based on 6, 13-bis(triisopropylsilylethynyl) (TIPS) pentacene were improved by blending poly(alpha-methylstyrene) (P alpha MS) 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 P alpha MS, 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.
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