| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Conformation-Insensitive Ambipolar Charge Transport in a Diketopyrrolopyrrole(DPP)-Based Co-polymer Containing Acetylene Linkages(OFET) |
| 초록 |
A new donor−acceptor organic semiconducting co-polymer (PDPP-TAT) containing acetylene linkages based on diketopyrrolopyrrole has been synthesized and compared with a DPP-based co-polymer (PDPPTVT) containing vinylene linkages. The π-conjugation of PDPPTAT was found to be highly insensitive to the chain conformation, in contrast to that of PDPPTVT. As a result, PDPPTAT provides favorable charge transport for electrons as well as holes, and enables facile charge transport in amorphous and tie-molecular regions connecting its crystalline domains. PDPP-TAT exhibits ambipolar characteristics with a high electron/hole mobility ratio of ∼0.3 in field-effect transistors, whereas PDPP-TVT exhibits unipolar characteristics with a μe/μh value that is a factor of 30 lower. Our results demonstrate that the conformation sensitivity of charge transport is a vital factor in the electrical performances of actual organic transistor devices |
| 저자 |
윤희준1, 제환일1, 최현호2, 조길원2, 김윤희1, 권순기1
|
| 소속 |
1경상대, 2포항공대 화학공학과 |
| 키워드 |
OTFT; Ambipolar transistor; organic semiconductors
|
| E-Mail |
|
