A New Fullerene-Free Bulk-Heterojunction System for Efficient High-Voltage and High-Fill Factor Solution-Processed Organic Photovoltaics
Journal article published in 2015 by
Zheng Tang,
Bo Liu,
Armantas Melianas,
Jonas Bergqvist,
Wolfgang Tress,
Qinye Bao,
Deping Qian,
Olle Inganäs,
Fengling Zhang 
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Abstract
Small molecule donor/polymer acceptor bulk-heterojunction films with both compounds strongly absorbing have great potential for further enhancement of the performance of organic solar cells. By employing a newly synthesized small molecule donor with a commercially available polymer acceptor in a solution-processed fullerene-free system, a high power conversion efficiency of close to 4% is reported.