| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Effect of Donor Molecular Structure and Gate Dielectricon Charge-Transporting Characteristics for Isoindigo-BasedDonor–Acceptor Conjugated Polymers |
| 초록 |
This study investigates the effect of the molecular structure of three different donor units, naphthalene (Np), bithiophene (BT), and thiophene– vinylene–thiophene (TVT), in isoindigo (IIG)-based donor–acceptor conjugated polymers on the charge carrier mobility of organic field-effect transistors (OFETs). The charge transport properties of three different IIG-based polymers strongly depend on donor units. PIIG–BT OFETs showed 50 times higher hole mobility (0.63 cm2 V−1 s−1) than PIIG–TVT and PIIG–Np ones of ≈ 0.01 cm2 V−1 s−1 with CYTOP dielectric though the BT units have less planarity than the TVT and Np units. By combining theoretical, optical, electrical, and structural analyses, this study finds that the large difference in OFET mobility mainly originates from the transport disorders determined by the different microcrystal structure, rather than the intrinsic transport properties in isolated chains for different polymers. |
| 저자 |
박원태1, 김경식2, Chuan Liu3, 양창덕4, 노용영1
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| 소속 |
1동국대, 2KIST, 3Sun Yat-sen Univ., 4UNIST |
| 키워드 |
OTFT; donor-acceptor copolymer; density of state; gate dielectrics
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| E-Mail |
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