| 학회 |
한국재료학회 |
| 학술대회 |
2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 |
22권 2호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Highly Conductive Transparent Organic Electrodes Laminated with Graphene Encapsulation for Environmental Stability and Mechanical Properties |
| 초록 |
Operational stability and device lifetime are crucial issues in organic optoelectronics. Though excellent transparency and electrical conductivity, indium tin oxide(ITO) electrodes have huge drawbacks for the utilization in the flexible organic applications, due to indium diffusion to organic active layer in organic device, and poor mechanical properties. As an alternative, highly conductive and transparent electrodes based on conjugated conducting polymers have attracted great attention in flexible organic optoelectronics. However, the conducting polymers are susceptible to degradation in the harsh conditions, such as humidity, ultraviolet light, and high mechanical and thermal stress. Here, we report that highly conductive and environmentally stable organic transparent electrodes(TEs) can be fabricated by mechanically laminating poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) films containing dimethylsulfoxide and Zonyl fluorosurfactant (PDZ films) with a monolayer graphene barrier. The graphene-laminated structure improves the operational stability and lifetime of the TEs under the harsh conditions while maintaining high conductivity, and transparency, and mechanical flexibility. The proposed lamination process allows graphene to be coated onto the PDZ films uniformly and conformally with tight interfacial binding, free of wrinkles and air gaps. The laminated films exhibit an outstanding room-temperature hole mobility of ~85.1 cm2 V−1 s−1 since the graphene can serve as an effective bypass for charge carriers. The significantly improved stability of the graphene-laminated TEs against unfavorable environmental conditions is particularly promising. |
| 저자 |
이 도희1, 주 재환1, 조 준현1, 김 성엽2, 유 정우1, 권 순용1
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| 소속 |
1울산과학기술원 신소재공학부, 2울산과학기술원 기계 및 원자력 공학부 |
| 키워드 |
Flexible; and transparent electrode; PEDOT:PSS; Graphene; Gas barrier; Thermal stability
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| E-Mail |
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