| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Enhanced operation stability of organic field-effect transistors by overcoating fluorinated polymers on BaTiO3 dielectrics |
| 초록 |
High dielectric constant materials have been extensively investigated for many potential applications including low-voltage-operating organic field-effect transistors (OFETs). For ensuring operation stability of the OFETs, an interface between organic semiconductors and the dielectrics should be optimized. In this study, we overcoated fluorinated polymer onto barium titanate (BaTiO3) dielectrics toward the fabrication of highly stable OFETs. Surface of BaTiO3 dielectric layers were effectively modified with poly(pentafluorostyrene) (PFS) overcoating. The PFS/BaTiO3 bilayer dielectrics significantly controlled leakage currents and surface properties. The electron-withdrawing character of PFS/BaTiO3 films effectively blocked hole trapping. Finally, the overcoating of PFS allowed PFS/BaTiO3 to be utilized as gate dielectric layer for highly stable OFETs during low-voltage operation. This was supported by Korea National University of Transportation in 2019. |
| 저자 |
정용진 |
| 소속 |
한국교통대 |
| 키워드 |
fluorinated polymer; ofets; transistors; batio3; dielectric
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| E-Mail |
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