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Jing Gao, Letian Dou, Wei Chen, Chun-Chao Chen, Xuanrong Guo, Jingbi You, Brion Bob, Wei-Hsuan Chang, Joseph Strzalka, Cheng Wang, Gang Li and Yang Yang Improving Structural Order for a High-Performance Diketopyrrolopyrrole-Based Polymer Solar Cell with a Thick Active Layer Advanced Energy Materials 4

Version of Record online: 18 NOV 2013 | DOI: 10.1002/aenm.201300739

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By replacing branched side chains with linear side chains, a polymer system used in solar cells acquires enhanced structural order and carrier mobility. The power conversion efficiences (PCEs) of single-junction devices incorporating these polymers are improved from ≈5% to almost 7%, and the devices based on the polymers containing linear side chains show excellent photovoltaic performance with a thick active layer of up to 360 nm, making them promising for industrial implementation.

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