| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Improving the charge injection of n-type organic field-effect transistors with water-soluble polyfluorene |
| 초록 |
To achieve high performances OFETs, various efforts have been applied to organic semiconductors, dielectirics and electrodes. Charge injection from electrodes is the one of key factors for the high performance OFETs. It could be controlled by electrodes or inserted interface layer. In this study, the high performances top-gated and bottom contact, [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) OFETs have been researched by introducing conjugated polyelectrolyte interfacial dipole layers, water-soluble polyfluorene (WPF), at electrodes/organic semiconductor interfaces as an electron injection layer. As inserting WPF layer to PCBM OFETs, significant enhancement was observed that increasing electron charge-carrier mobility from ~0.05 cm2/Vs up to ~0.14 cm2/Vs and decreasing threshold voltage, resulting from reducing the energy barrier between electrodes and semiconductors. These results were confirmed by transmission-line method, UPS and Kelvin prove measurement. |
| 저자 |
김지홍1, 김동유2, 김동윤1, 강리라1, 강민지1, 김남구1, 이승훈1
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| 소속 |
1광주과학기술원, 2광주과학기술원 신소재공학과 |
| 키워드 |
organic transistors; charge injection; water-soluble polyfluorene
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| E-Mail |
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