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  • Design and Synthesis of a Low Bandgap Small Molecule Acceptor for Efficient Polymer Solar Cells.

Design and Synthesis of a Low Bandgap Small Molecule Acceptor for Efficient Polymer Solar Cells.

Advanced materials (Deerfield Beach, Fla.) (2016-07-06)
Huifeng Yao, Yu Chen, Yunpeng Qin, Runnan Yu, Yong Cui, Bei Yang, Sunsun Li, Kai Zhang, Jianhui Hou
PMID27380468
ABSTRACT

A novel non-fullerene acceptor, possessing a very low bandgap of 1.34 eV and a high-lying lowest unoccupied molecular orbital level of -3.95 eV, is designed and synthesized by introducing electron-donating alkoxy groups to the backbone of a conjugated small molecule. Impressive power conversion efficiencies of 8.4% and 10.7% are obtained for fabricated single and tandem polymer solar cells.