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首页> 美国政府科技报告 >Development and Characterization of New Donor-Acceptor Conjugated Polymers and Fullerene Nanoparticles for High Performance Bulk Heterojunction Solar Cells
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Development and Characterization of New Donor-Acceptor Conjugated Polymers and Fullerene Nanoparticles for High Performance Bulk Heterojunction Solar Cells

机译：用于高性能大块异质结太阳能电池的新型供体 - 共轭共轭聚合物和富勒烯纳米粒子的开发和表征

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Bithiophene/thieno (3,4-c)pyrrole-4,6-dione (TPD)-based donor- acceptor polymer, PBTTPD, that exhibits high crystallinity and a low-lying highest occupied molecular orbital was prepared. A device incorporating a PBTTPD/ (6,6)-phenyl-C61-butyric acid methyl ester blend (1:1.5, w/w) displayed an open circuit voltage of 0.95 V and a power conversion efficiency of 4.7%. A molecular design concept was introduced to develop a series of new conjugated polymers with donor-pi-bridge-acceptor side chains for high-efficiency polymer solar cells. Different from the commonly used linear D-A conjugated polymers, the acceptor of the polymers are located at the end of the side chains and connected with the electron-rich unit on the main chain through a pi-bridge. This method provides a facile way to tune the bandgaps and energy levels of the polymers by simply varying the acceptors on the side chains. A systematic study was performed in this project to elucidate the relationship among molecular structure-morphology-device properties to explore the full potential of applying these new materials for OPV applications.

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