| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Enhanced photoresponsive mobility of rubrene nanosheet-based organic field effect transistors through hybridization with CdSe/Zns quantum dots |
| 초록 |
Organic field effect transistors (OFETs) were fabricated using a p-type rubrene single nanosheet (NS) as an active layer hybridized with n-type CdSe/ZnS quantum dots (QDs). The dark and photoresponsive (λex=455 nm) electrical characteristics of the rubrene NS-based OFETs were investigated with and without the QDs. In dark conditions, the source-drain current (IDS) of the OFETs increased and the threshold voltage was changed to a positive direction after the partial attachment of the QDs to the surface of the NS. We also observed that the laser confocal microscope (LCM) PL intensity of the rubrene NS reduced through the attachment of the QDs, due to the charge transfer effect. With light irradiation, the photoresponsive IDS and mobility of the OFETs were considerably enhanced by the hybridization with QDs. The results originated from both the ground charge transfer and exciton disjunction effects at the interface of p-type rubrene and n-type QDs heterojunctions. |
| 저자 |
정주형1, 김태혁2, 한윤덕2, 김정용3, 전수민1, 주진수2, 이광섭1
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| 소속 |
1한남대, 2고려대, 3성균관대 |
| 키워드 |
Rubrene; Nanosheet; Quantum Dots; Organic field effect transistor; Mobility; Photocurrent
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| E-Mail |
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