Bioinspired molecules design for bilateral synergistic passivation in buried interfaces of planar perovskite solar cells

作     者：Bin Wang Junjie Ma Zehua Li Gangshu Chen Qiang Gu Shuyao Chen Yiqiang Zhang Yanlin Song Jingbo Chen Xiaodong Pi Xuegong Yu Deren Yang Bin Wang;Junjie Ma;Zehua Li;Gangshu Chen;Qiang Gu;Shuyao Chen;Yiqiang Zhang;Yanlin Song;Jingbo Chen;Xiaodong Pi;Xuegong Yu;Deren Yang

作者机构：School of Materials Science and EngineeringHenan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou 450001China Key Laboratory of Green PrintingInstitute of ChemistryChinese Academy of Sciences100190 BeijingChina State Key Laboratory of Silicon Materials&School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第2期

页      面：1069-1078页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：support from the National Key R&D Program of China(No.2018YFA0208501) the National Nature Science Foundation of China(Nos.51803217,51773206,91963212,and 51961145102[BRICS project]) Beijing National Laboratory for Molecular Sciences(Nos.BNLMS-CXXM-202005 and 2019BMS20003) K.C.Wong Education Foundation,Beijing National Laboratory for Molecular Sciences(BNLMS-CXXM-202005) Key R&D and Promotion Project of Henan Province(No.192102210032) Open Project of State Key Laboratory of Silicon Materials(No.SKL2019-10) Outstanding Young Talent Research Fund of Zhengzhou University 

主　　题：perovskite solar cells bioinspired bilateral passivation buried interfaces catechol derivatives 

摘      要：Trap-mediated energy loss in the buried interface with non-exposed feature constitutes one of the serious challenges for achieving high-performance perovskite solar cells(PSCs).Inspired by the adhesion mechanism of mussels,herein,three catechol derivatives with functional Lewis base groups,namely 3,4-Dihydroxyphenylalanine(DOPA),3,4-Dihydroxyphenethylamine(DA)and 3-(3,4-Dihydroxyphenyl)propionic acid(DPPA),were strategically *** molecules as interfacial linkers are incorporated into the buried interface between perovskite and SnO_(2) surface,achieving bilateral synergetic passivation *** crosslinking can produce secondary bonding with the undercoordinated Pb^(2+) and Sn^(4+) *** PSCs treated with DOPA exhibited the best performance and operational *** the DOPA passivation,a stabilized power conversion efficiency(PCE)of 21.5%was demonstrated for the planar *** 55 days of room-temperature storage,the unencapsulated devices with the DOPA crosslinker could still maintain 85%of their initial performance in air under relative humidity of-15%.This work opens up a new strategy for passivating the buried interfaces of perovskite photovoltaics and also provides important insights into designing defect passivation agents for other perovskite optoelectronic devices,such as light-emitting diodes,photodetectors,and lasers.