Multifunctional Graphdiyne Enables Efficient Perovskite Solar Cells via Anti-Solvent Additive Engineering  

作　　者：Cong Shao Jingyi He Jiaxin Ma Yirong Wang Guosheng Niu Pengfei Zhang Kaiyi Yang Yao Zhao Fuyi Wang Yongjun Li Jizheng Wang 

机构地区：[1]CAS Key Laboratory of Organic Solids,Institute of Chemistry,Beijing National Laboratory for Molecular Sciences,Chinese Academy of Sciences,Beijing 100049,People’s Republic of China [2]University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China [3]CAS Key Laboratory of Engineering Plastics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100049,People’s Republic of China [4]CAS Key Laboratory of Photochemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100049,People’s Republic of China [5]National Centre for Mass Spectrometry in Beijing,CAS Key Laboratory of Analytical Chemistry for Living Biosystems,Beijing National Laboratory for Molecular Sciences,Chinese Academy of Sciences,Beijing 100049,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第5期492-507,共16页纳微快报(英文版)

基　　金：supported by the National Key Research Program of China(Y91Z0152B4,2018YFA0703501);the National Nature Science Foundation of China(22172173,22021002)。

摘　　要：Finding ways to produce dense and smooth perovskite films with negligible defects is vital for achieving high-efficiency perovskite solar cells(PSCs).Herein,we aim to enhance the quality of the perovskite films through the utilization of a multifunctional additive in the perovskite anti-solvent,a strategy referred to as anti-solvent additive engineering.Specifically,we introduce ortho-substituted-4′-(4,4″-di-tertbutyl-1,1′:3′,1″-terphenyl)-graphdiyne(o-TB-GDY)as an AAE additive,characterized by its sp/sp^2-cohybridized and highlyπ-conjugated structure,into the anti-solvent.o-TB-GDY not only significantly passivates undercoordinated lead defects(through potent coordination originating from specific highπ–electron conjugation),but also serves as nucleation seeds to effectively enhance the nucleation and growth of perovskite crystals.This markedly reduces defects and non-radiative recombination,thereby increasing the power conversion efficiency(PCE)to 25.62%(certified as 25.01%).Meanwhile,the PSCs exhibit largely enhanced stability,maintaining 92.6%of their initial PCEs after 500 h continuous 1-sun illumination at~23°C in a nitrogen-filled glove box.

关 键 词：Perovskite solar cells Graphdiyne Anti-solvent additive engineering Crystallization Defect passivation 

分 类 号：O61[理学—无机化学]