Yongxi Li, Kai Yao, Hin-Lap Yip, Fei-Zhi Ding, Yun-Xiang Xu, Xiaosong Li, Yu Chen and Alex K.-Y. Jen Eleven-Membered Fused-Ring Low Band-Gap Polymer with Enhanced Charge Carrier Mobility and Photovoltaic Performance Advanced Functional Materials 24
A multi-ring, ladder-type low band-gap polymer (PIDTCPDT-DFBT) is developed to show enhanced light harvesting, charge transport, and photovoltaic performance. The rigidified polymer provides lower reorganizational energy, resulting in one order higher hole mobility than the reference polymer. The device made from PIDTCPDT-DFBT also shows a quite promising power conversion efficiency of 6.46%.
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