二维/三维异质结构协同钝化提升钙钛矿太阳能电池性能与稳定性

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关键词：钙钛矿太阳能电池；二维钝化；异质结结构；自由基清除；器件稳定性中图分类号：TM914.4 文献标识码：ADOI：10.37188/CJL.20250233 CSTR：32170.14.CJL.20250233

SynergisticPassivationvia 2D/3DHeterostructuresfor EnhancedEfficiencyand StabilityofPerovskite Solar Cells

ZHOU Xuan 1，2* ，HE Ruifu²，SONG Jun²，QU Junle² （1.SchoolofSino-Germany InteligentProduction.Shenzhen CityPolytechnic，Shenzhen518o57，China; 2.KeyLaboratoryofOptoelectronic Devicesand Systems，Centerfor Biomedical Optics and Photonics（CBOP）& College of Physicsand Optoelectronic Engineering，Shenzhen University，Shenzhen 51806O，China） *Corresponding Author，E-mail：Zhouxuan@szcp.edu.cn

Abstract：Perovskite solar cels （PSCs） show great promise owing to their remarkable optoelectronic performance， yettheircommercial deploymentis hindered byintrinsicinstability.We introduceasynergistic2D/3Dheterostructure passivationapproach，integrating aTAI-derived 2D perovskitecapping layer with the TEMPO radical scavenger toconcurrentlymitigategrainboundary defectsandradical-induced degradation.This strategy improves perovskite crystallinityandfilmuniformity，lowering the surface roughnessfrom9.60nm to6.25nm.Carierlifetime extends from 250 ns to 355 ns，as confirmed by steady-state and time-resolved photoluminescence，indicating suppressed non-radiative recombination.The 2D/3D-based devices demonstrate enhanced recombination resistance（383.7Ω） and superior charge transport，yielding a champion eficiency of 21. 15% . The device retained 71. 5% of its initial efficiencyafter2Odaysinadamp-heatenvironment.This studyofersanew materialsdesignparadigm toward efficient andoperationally stableperovskitephotovoltaics.

Keywords：perovskite solarcels；two-dimensional passivation；heterojunction structure；radical scavenging；device stability

1引言

钙钛矿太阳能电池（PSCs）以其卓越的光吸收能力、长载流子寿命和低成本制备工艺，成为近年来最具潜力的新型光伏技术之一。（剩余9414字）