| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Novel multifunctional layer using metal salt for efficient n-type organic field effect transistor |
| 초록 |
A novel solution processable functional layer based on cesium carbonate (Cs2CO3) metal salt is introduced as an interlayer in n-type organic field effect transistors (OFETs) using [6,6]-phenyl C61-butyric acid methyl ester (PC61BM) semiconductor as an active layer. The layer results in significantly improved performance and lifetime of the devices. Dipole moments in Cs2CO3 layer give rise to lowering energy barrier for charge injection, resulting in reducing contact resistance between semiconductor and metal electrodes. The devices with the passivation layer show no significant performance change in ambient air comparing to the devices without the layer, which were severely degraded with time. The extended device life span is attributed to close-packed crystalline structure of Cs2CO3 metal salt that efficiently prevents penetration of oxygen into the active layer. X-ray diffraction (XRD) data shows well-defined crystalline structure of the Cs2CO3 thin film formed on the active layer. |
| 저자 |
권경춘, 김동원, 강홍규, 유길호, 김근진, 이광희
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| 소속 |
광주과학기술원 |
| 키워드 |
cesium carbonate; n-type OFET; stability; metal salt
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| E-Mail |
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