| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
대학원생 구두발표 (발표15분) |
| 제목 |
Improving the Electrical Connection and Mechanical Stability of n-Type Conjugated Polymers through Fluorine-Induced Robust Aggregation |
| 초록 |
Naphthalene diimide (NDI)-based conjugated polymers can form large crystal domains through NDI-driven self-assembly and are widely used in organic electronic devices as n-type materials. However, their large crystal domains cause poor electrical connection, and large-scale phase separation in all-polymer blend films. Formation of an interconnected network of small domains with short-range ordering and mixed orientations could be an effective way of increasing the electron mobility (μe) and mechanical stability. Herein, we control morphology of NDI-based conjugated polymers by introducing a fluorinated copolymer of NDI and (E)-1,2-bis(3-fluorothiophen-2-yl)ethene (FTVT) (PNDI-FTVT), resulting in one order of magnitude higher μe (0.13 cm2 V-1 s-1) (OFET) and enhanced photovoltaic performance as well as excellent mechanical stability in a flexible all-PSC (7.14–5.78%), maintaining 81% of its initial performance at a bending radius of 8.0 mm after 1000 bending cycles. |
| 저자 |
류승운, 최경원, 박상아, 최예림, 민지현, 박태호
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| 소속 |
POSTECH |
| 키워드 |
NDI-based conjugated polymer; Fluorination; Morphology; Charge transport; All-polymer solar cell; Flexible device
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| E-Mail |
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