Cross-linked polyelectrolyte reinforced SnO_(2)electron transport layer for robust flexible perovskite solar cells  

作　　者：Zhihao Li Zhi Wan Chunmei Jia Meng Zhang Meihe Zhang Jiayi Xue Jianghua Shen Can Li Chao Zhang Zhen Li 

机构地区：[1]State Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU),Xi’an 710072,Shaanxi,China [2]Department of Aeronautical Structure Engineering,School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,Shaanxi,China [3]Shaanxi Key Laboratory of Impact Dynamics and Its Engineering Application,Joint International Research Laboratory of Impact Dynamics and Its Engineering Applications,Xi’an 710072,Shaanxi,China [4]Research&Development Institute of Northwestern Polytechnical University in Shenzhen,Shenzhen 519057,Guangdong,China

出　　处：《Journal of Energy Chemistry》2023年第10期335-342,I0010,共9页能源化学（英文版）

基　　金：supported by the National Key R&D Program of China(2019YFB1503201);the National Natural Science Foundation of China(52172238,52102304,51902264);the Natural Science Foundation of Shanxi Province(2020JM-093);the Open project of Shaanxi Laboratory of Aerospace Power(2021SXSYS-01-03);the Science Technology and Innovation Commission of Shenzhen Municipality(JCYJ20190807111605472);the Fundamental Research Funds for the Central Universities(3102019JC0005,5000220118)。

摘　　要：SnO_(2)electron transport layer(ETL)is a vital component in perovskite solar cells(PSCs),due to its excellent photoelectric properties and facile fabrication process.In this study,we synthesized a water-soluble and adhesive polyelectrolyte with ethanolamine(EA)and poly-acrylic acid(PAA).The linear PAA was crosslinked by EA,forming a 3D network that stabilized the SnO_(2)nanoparticle dispersion.An organic–inorganic hybrid ETL is developed by introducing the cross-linked PAA-EA into SnO_(2)ETL,which prevents nano particle agglomeration and facilitates uniform SnO_(2)film formation with fewer defects.Additionally,the PAA-EA-modified SnO_(2)facilitated a uniform and compact perovskite film,enhancing the interface contact and carrier transport.Consequently,the PAA-EA-modified PSCs exhibited excellent PCE of 24.34%and 22.88%with high reproducibility for areas of 0.045 and 1.00 cm~2,respectively.Notably,owing to structure reinforce effect of PAA-EA in SnO_(2)ETL,flexible device demonstrated an impressive PCE of 23.34%while maintaining 90.1%of the initial PCE after 10,000 bending cycles with a bending radius of 5 mm.This successful approach of polyelectrolyte reinforced hybrid organic–inorganic ETL displays great potential for flexible,large-area PSCs application.

关 键 词：POLYELECTROLYTE CROSS-LINK Tin oxide Electron transfer layer Flexible solar cells 

分 类 号：TQ317[化学工程—高聚物工业] TM914.4[电气工程—电力电子与电力传动]