| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Vapor-Phase Synthesis of High-k, Ultrathin Polymer Dielectric with Molecular Thin, Hydrophobic Skin Layer for Extremely Stable Organic Thin-Film Transistor (OTFT) Operation |
| 초록 |
A sub-20 nm, high-k copolymer dielectric with hydroxyl functionality was synthesized via initiated chemical vapor deposition (iCVD). The inherently dry environment offered by the vapor-phase polymer synthesis prompted the snuggling of polar hydroxyl functionalities into the bulk polymer film to form a molecular thin hydrophobic skin layer at its surface. The chemical composition of the copolymer dielectric was optimized systematically to achieve high dielectric constant (k~6.2) as well as extremely low leakage current densities even with sub-20 nm thickness, leading to one of the highest capacitance achieved by a single polymer dielectric to date. Exploiting the structural advantage of the crosslinked high-k polymer dielectric, high-performance OTFTs with the suppressed hysteresis were obtained owing to the hydrophobic skin layer. Furthermore, the OTFTs with the copolymer dielectric showed an unprecedentedly excellent operational stability. |
| 저자 |
최준환, 임성갑
|
| 소속 |
KAIST |
| 키워드 |
polymer dielectric; polymer thin film; high-k dielectric; organic thin-film transistor (OTFT)
|
| E-Mail |
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