| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
(디스플레이) IT 광전자 소재 및 소자 |
| 제목 |
Control the Polymer Aggregation and Phase Separation by Molecular Weight for High-Performance Polymer-PCBM and all-polymer solar cells |
| 초록 |
The molecular weight of a conjugated polymer is one of the key factors for electronics device properties. In this study, a series of semi-crystalline PTTBT and PPDT2FBT polymers with different number-average molecular weights (Mn) were synthesized and their photovoltaic properties as electron donors for Polymer-PCBM and all-polymer solar cells (all-PSCs) were studied respectively. Tuning the Mn induced dramatic effects on the aggregation behaviors of the polymers and their bulk heterojunction (BHJ) morphology, which was thoroughly examined by GIWAX, Ro-SoXS, AFM etc. High Mn PPDT2FBT promoted a strong “face-on” geometry in the blend film, suppressed the formation of an excessively large crystalline domain, and facilitated molecularly-intermixed phases with acceptor material leading to high power conversion efficiency. |
| 저자 |
MOHAMMAD AFSAR UDDIN, 우한영
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| 소속 |
부산대 |
| 키워드 |
molecular weight; photovoltaic cells; orientation
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| E-Mail |
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