期刊论文

Li, Zhenye(lizhenye@usc.edu.cn)

英文

Chemical Engineering Journal

1385-8947

2022

448

137554

10.1016/j.cej.2022.137554

In summary, we designed and synthesized a NDI-based n-type polymer P(NDIHDDT-T2) with asymmetric alkyl side-chain. All-PSCs based on P(NDIHDDT-T2) exhibited impressive high PCEs of 11.2% for 0.04 cm2 device and 10.4% for 1 cm2 device, respectively, both of which outperformed the 10.7% for 0.04 cm2 device and 9.1% for 1 cm2 device based on P(NDI2OD-T2). To the best of our knowledge, this is the highest PCE achieved for 1 cm2 NDI-based all-PSCs. These enhanced photovoltaic performances can be

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All-polymer solar cells (all-PSCs) are considered to be the priority in the commercialization process of organic photovoltaics due to their excellent stability. However, it faces the key challenge of device area enlargement leading to degradation of photovoltaic performance because of the significantly different shear forces at center and edges of the substrate. In this work, we designed and synthesized a NDI-based n-type polymer P(NDIHDDT-T2) with asymmetric alkyl side-chain to overcome this key challenge. All-PSCs based on P(NDIHDDT-T2) showe...