【摘 要】
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A new crosslinked polymer,called P65,with appropriate photo-electrochemical,opto-electronic,and thermal properties,has been designed and synthesized as an effic
【机 构】
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Organic Chemistry,Centre of Molecular Devices,Department of Chemistry,KTH Royal Institute of Technol
论文部分内容阅读
A new crosslinked polymer,called P65,with appropriate photo-electrochemical,opto-electronic,and thermal properties,has been designed and synthesized as an efficient,dopant-free,hole-transport mate-rial(HTM)for n-i-p type planar perovskite solar cells(PSCs).P65 is obtained from a low-cost and easily synthesized spiro[fluorene-9,9'-xanthene]-3',6'-diol(SFX-OH)-based monomer X65 through a free-radical polymerization reaction.The combination of a three-dimensional(3D)SFX core unit,hole-transport methoxydiphenylamine group,and crosslinked polyvinyl network provides P65 with good sol-ubility and excellent film-forming properties.By employing P65 as a dopant-free hole-transport layer in conventional n-i-p type PSCs,a power conversion efficiency(PCE)of up to 17.7％is achieved.To the best of our knowledge,this is the first time a 3D,crosslinked,polymeric dopant-free HTM has been reported for use in conventional n-i-p type PSCs.This study provides a new strategy for the future development of a 3D crosslinked polymeric dopant-free HTM with a simple synthetic route and low-cost for commercial,large-scale applications in future PSCs.
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