Electrically stable polymer-only dielectrics for organic field-effect transistors with low gate leakage current
- Title
- Electrically stable polymer-only dielectrics for organic field-effect transistors with low gate leakage current
- Author
- 장재영
- Keywords
- Organic field-effect transistor (OFET); Cyclic olefin copolymer; Leakage current; Dielectric; Solution process
- Issue Date
- 2020-10
- Publisher
- ELSEVIER
- Citation
- ORGANIC ELECTRONICS, v. 85, article no. 105828, page. 1-5
- Abstract
- Organic-only dielectric films are needed for several electronic applications, particularly in organic field-effect transistors (OFETs). Here, cyclic olefin copolymer (COC) films with the thickness on the order of 100 nm are reported as satisfactory dielectric layers for high-performance and reliable OFETs. The COC dielectric film has a high glass-transition temperature and low free volume, which contribute to its superior insulating properties and high dielectric strength. Moreover, the smooth surface morphology and low surface energy of the COC film are responsible for the formation of highly crystalline structures of the overlying pentacene molecules. Finally, the OFETs with the COC dielectric layers are found to exhibit charge-carrier mobilities up to 1.075 +/- 0.05 cm(2)/V and on/off ratios exceeding 10(6) while displaying low gate leakage current and negligible hysteresis.
- URI
- https://www.sciencedirect.com/science/article/pii/S1566119920302147?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/172053
- ISSN
- 1566-1199; 1878-5530
- DOI
- 10.1016/j.orgel.2020.105828
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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