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.

Dong Chen;Siqi Liu;Xiaotian Hu;Feiyan Wu;Jiabin Liu;Kangkang Zhou;Long Ye;Lie Chen;Yiwang Chen

College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC),Nanchang University,Nanchang 330031,China;Tianjin Key Laboratory of Molecular Optoelectronic Science,Tianjin University,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin),Tianjin 300072,China;Institute of Advanced Scientific Research (iASR),Key Laboratory of Functional Organic Small Molecules for Ministry of Education,Jiangxi Normal University,Nanchang 330022,China

中国科学:化学（英文版）

[1]Dong Chen;Siqi Liu;Xiaotian Hu;Feiyan Wu;Jiabin Liu;Kangkang Zhou;Long Ye;Lie Chen;Yiwang Chen-.Printable and stable all-polymer solar cells based on non-conjugated polymer acceptors with excellent mechanical robustness)[J].中国科学:化学（英文版）,2022(01):182-189

PTClm,PTClo,PTCl

Printable,stable,polymer,solar,cells,conjugated,acceptors,excellent,mechanical,robustness,All,PSCs,trigger,enormous,commercial,applications,great,progress,has,been,made,recent,years,However,from,small,area,devices,large,modules,poor,adaption,materials,printing,methods,efficiency,loss,still,challenges,Herein,three,novel,PTH,developed,It,found,that,effectively,minimize,technique,gaps,between,spin,coating,blade,which,facilitate,preparation,flexible,By,directly,inheriting,condition,processed,achieves,impressive,power,conversion,PCE,comparable,one,Such,system,also,well,tolerate,scale,substrate,Notable,rigid,obtained,is,highest,value,fabricated,by,In,addition,show,thermal,stability,These,results,demonstrate,potential,candidates,fabrication,highly,efficient

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