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| Type |
Poster Presentation |
| Area |
Polymer Chemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 19일 (금요일) 11:00~12:30 |
| Code |
POLY.P-24 |
| Subject |
Polaron Dynamics of a Non-Fullerene Acceptor in Ternary Blend Organic Solar Cells |
| Authors |
Dongki Lee , Kilwon Cho*
Department of Chemical Engineering, Pohang University of Science and Technology, Korea
|
| Abstract |
We investigated the extension effects of side-group and backbone of a push-pull conjugated polymer (CP) on ternary-blend organic solar cells (OSCs) containning PC71BM and a non-fullerene acceptor (NFA). The photovoltaic properties of the OSCs prepared with the side-group (PBTBT-OTT) and backbone (PDTBT-OTT) extended CPs are strongly dependent on the additional free carriers (FCs) that are generated from the NFA. Especially, PDTBT-OTT induced the ultrafast charge-transfer to PC71BM due to the efficient intrachain energy-transfer, which resulted in the unique formation-pathway of the additonal FCs in the NFA domains. This phenomenon enhanced photocurrent of the ternary-blend NFA OSC with PDTBT-OTT by complementing the nongeminate recombination losses between PDTBT-OTT and the acceptors. |
| E-mail |
dongkilee@postech.ac.kr |
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123rd General Meeting of the KCS