| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Surface Modification of Graphene Quantum Dots by Azide Chemistry and Their Use in Compatibilizer for Thermally Stable Polymer Solar Cell |
| 초록 |
Compatibilizers for polymer solar cells (PSCs), in general, needs complicated synthetic methods to combine two different moieties, limiting their practical use. Herein, we have developed a simple but powerful approach to synthesize novel graphene quantum dots (GQDs)-based compatibilizers to enhance thermal stability of PSCs. The surface properties of GQDs were modified by direct bonding of small molecules on GQDs using azide chemistry. The modified GQDs could dramatically reduce the interfacial tension between electron donor and acceptor, which was demonstrated by optical microscopy images of active layer of PSCs after thermal treatment. Finally, the bulk-heterojunction organic photovoltaics (BHJ OPVs) containing surface-modified GQDs maintain over 70% of initial power conversion efficiency after 60 h annealing at an elevated temperature of 150°C. |
| 저자 |
조한희1, 김진성1, Kin Liao2, 김범준3
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| 소속 |
1KAIST, 2Department of Mechanical Engineering, 3Khalifa Univ. |
| 키워드 |
polymer solar cell; graphene quantum dot; compatibilizer
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| E-Mail |
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