| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
분자전자소재 및 소자 |
| 제목 |
H-aggregation strategy to design molecular semiconductors for highly reliable organic thin film transistors |
| 초록 |
We have designed four kinds of quaterthiophene derivatives with end-groups of dicyclohexyl ethyl, (DCE4T) dicyclohexyl butyl, (DCB4T) cyclohexyl ethyl, and (CE4T) cyclohexyl butyl (CB4T). From UV-vis absorption measurement, we found out that quaterthiophene derivatives with asymmetrical end-group substitution prefer to aggregate by H-type while those with symmetric end-group substitution prefer to aggregate by J-type. We have fabricated a thin-film transistor using the semiconducting materials and found out obvious correlations between molecular packing type and charge carrier mobility. The field-effect mobilities of the device using asymmetrical molecules, CE4T and CB4T, were quite high above 10-2 cm2/(Vs), while those of symmetrical molecules, DCE4T and DCB4T, were poor below 10-4 cm2/(Vs). |
| 저자 |
안태규1, 박찬언1, 권순기2, 박종원2, 정대성3, 장상훈2, 차효정3, 김슬옹2
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| 소속 |
1포항공과대, 2경상대, 3포항공대 |
| 키워드 |
OTFT; H and J aggregation; reproducibility
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| E-Mail |
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