Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 7, Issue 4, Pages 1351-1356Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ee43041c
Keywords
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Funding
- NSFC [21025418, 51261130582, 21021091]
- 973 Project [2013CB834702, 2011CB808401]
- Chinese Academy of Sciences
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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.
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