【摘 要】
：
The regulated crystallization of perovskite and highly repeatable preparation are decisive challenges for large-scale flexible perovskite solar cells (PSCs).Herein,we synthesize an oil-soluble poly(3,4-ethylenedioxythiophene) (Oil-PEDOT) as a hole transpo
【机 构】
：
College of Chemistry,Nanchang University,Nanchang 330031,China;Institute of Polymers and Energy Chem
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The regulated crystallization of perovskite and highly repeatable preparation are decisive challenges for large-scale flexible perovskite solar cells (PSCs).Herein,we synthesize an oil-soluble poly(3,4-ethylenedioxythiophene) (Oil-PEDOT) as a hole transport layer (HTL).The non-wetting Oil-PEDOT HTL can promote the quality of large-area flexible perovskite films because of its optimized crystallinity and printability.The Oil-PEDOT layer also delivers desirable conductivity and charge transport without a complex doping.Consequently,the flexible PSCs with Oil-PEDOT HTL achieve an efficiency of 19.51％ and 16.70％based on 1.05 and 22.50 cm2,respectively.Moreover,these large-scale flexible PSCs demonstrate remarkable mechanical robustness,and the efficiency exhibits 93％ retention after 7,000 bending cycles.These results show that the Oil-PEDOT is a potentially efficient HTL for fabricating efficient large-scale flexible PSCs.
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