Printable and stable all-polymer solar cells based on non-conjugated polymer acceptors with excellent mechanical robustness

• 作者: Dong Chen Siqi Liu Xiaotian Hu Feiyan Wu Jiabin Liu Kangkang Zhou Long Ye Lie Chen Yiwang Chen
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: ARTICLES
• 页码范围: 182-189
• 页数: 8页
• 语种: 英文

摘要

All-polymer solar cells (all-PSCs) trigger enormous commercial applications,and great progress has been made in recent years.However,from small-area devices to large-area modules,the poor adaption of the materials for printing methods and the large efficiency loss are still great challenges.Herein,three novel non-conjugated polymer acceptors (PTH-Y,PTClm-Y and PTClo-Y)are developed for all-PSCs.It can be found that non-conjugated polymer acceptors can effectively minimize the technique and efficiency gaps between small-area spin-coating and large-area blade-printing method,which can facilitate the preparation of large-area flexible device.By directly inheriting the spin-coating condition,the blade-coating processed device based on PTCl.-Y achieves an impressive power conversion efficiency (PCE) of 12.42％,comparable to the spin-coating processed one(12.74％).Such a non-conjugated polymer system also can well tolerate large-scale preparation and flexible substrate.Notable PCE of 11.94％ for large-area rigid device and 11.56％ for large-area flexible device are obtained,which is the highest value for large-area flexible all-PSCs fabricated by blade-coating.In addition,the non-conjugated PTClo-Y-based devices show excellent thermal stability and mechanical robustness.These results demonstrate that the non-conjugated polymer acceptors are potential candidates for the fabrication of highly-efficient,large-area and robust flexible all-PSCs by printing methods.