PS‐b‐P3HT Copolymers as P3HT/PCBM Interfacial Compatibilizers for High Efficiency Photovoltaics

• DOI: 10.1002/adma.201103361
• Publication Date: 2011-11-18T10:12:59Z
• Authors: Zhenzhong Sun; Kai Xiao; Jong Kahk Keum; Xiang Yu; Kunlun Hong; Jim Browning; Ilia N. Ivanov; Jihua Chen; Jose Alonzo; Dawen Li; Bobby G. Sumpter; Edward A. Payzant; Christopher M. Ro...; David B. Geohegan
• Keywords: Models, Molecular; Electric Power Supplies; Molecular Conformation; Sunlight; Polystyrenes; Fullerenes; Thiophenes; 02 engineering and technology; 0210 nano-technology; 7. Clean energy

A conducting diblock copolymer of PS-b-P3HT was added to serve as a compatibilizer in a P3HT/PCBM blend, which improved the power-conversion efficiency from 3.3% to 4.1% due to the enhanced crystallinity, morphology, interface interaction, and depth profile of PCBM.