Binary additives synergistically boost the efficiency of all-polymer solar cells up to 3.45

Binary additives synergistically boost the power conversion efficiency of all-polymer solar cells up to 3.45%. The nonvolatile additive PDI-2DTT suppresses aggregation of the acceptor PPDIDTT and enhances donor/acceptor mixing, while the additive DIO facilitates aggregation and crystallization of th...

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Bibliographic Details
Published in:Energy & environmental science 2014, Vol.7 (4), p.1351-1356
Main Authors: Cheng, Pei, Ye, Long, Zhao, Xingang, Hou, Jianhui, Li, Yongfang, Zhan, Xiaowei
Format: Article
Language:English
Subjects:
Agglomeration
Balancing
Charge transport
Crystallization
Energy conversion efficiency
Phase separation
Photovoltaic cells
Solar cells
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Summary:Binary additives synergistically boost the power conversion efficiency of all-polymer solar cells up to 3.45%. The nonvolatile additive PDI-2DTT suppresses aggregation of the acceptor PPDIDTT and enhances donor/acceptor mixing, while the additive DIO facilitates aggregation and crystallization of the donor PBDTTT-C-T as well as improves phase separation. Combination of DIO and PDI-2DTT leads to suitable phase separation and improved and balanced charge transport, which is beneficial to efficiency enhancement.
ISSN:1754-5692
1754-5706
DOI:10.1039/c3ee43041c