Precise control on the crystallization with co-anti-solvents in wide-bandgap perovskite film for efficient perovskite-organic tandem solar cells  

混合反溶剂协同调控钙钛矿薄膜结晶提高钙钛矿有机叠层太阳能电池性能

作　　者：ASLAM Fawad LI Heng-yue YANG Fang FENG Erming CHANG Jian-hui DING Yang LIAO Xiang ZAHID Muhammad SADIQ Muhammad Irfan TAHIR Muhammad ZENG Qiang LIU Fang-yang YANG Jun-liang ASLAM Fawad;李恒月;阳芳;冯二明;常建辉;丁洋;廖响;ZAHID Muhammad;SADIQ Muhammad Irfan;TAHIR Muhammad;曾强;刘芳洋;阳军亮(Hunan Key Laboratory for Super-microstructure and Ultrafast Process,School of Physics,Central South University,Changsha 410083,China;Hunan Key Laboratory of Nanophotonics and Devices,School of Physics,Central South University,Changsha 410083,China;State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;School of Metallurgy and Environment,Central South University,Changsha 410083,China)

机构地区：[1]Hunan Key Laboratory for Super-microstructure and Ultrafast Process,School of Physics,Central South University,Changsha 410083,China [2]Hunan Key Laboratory of Nanophotonics and Devices,School of Physics,Central South University,Changsha 410083,China [3]State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China [4]School of Metallurgy and Environment,Central South University,Changsha 410083,China

出　　处：《Journal of Central South University》2024年第12期4328-4337,共10页中南大学学报(英文版)

基　　金：Projects(U23A20138,52173192,52203250)supported by the National Natural Science Foundation of China;Project(2022YFB3803300)supported by the National Key Research and Development Program of China;Project supported by the State Key Laboratory of Powder Metallurgy,Central South University,China。

摘　　要：Constructing tandem solar cells(TSCs)is a strategy to enhance the power conversion efficiency(PCE)of single-junction photovoltaic technologies.Herein,efficient four-terminal(4 T)perovskite-organic TSCs are developed via precise control over the crystallization with co-anti-solvents in wide-bandgap perovskite(FA_(0.8) Cs_(0.2) Pb(I_(0.6) Br_(0.4))_(3),energy gap:1.77 eV)film.High-quality perovskite films can be achieved by employing a sophisticated co-anti-solvent technique,which effectively enhances the perovskite crystallinity with large grain size and suppresses the nonradiative recombination with pinhole-free surfaces.The results demonstrate that co-anti-solvents with a low boiling point polarity and nonpolar solvent contribute to superior performance of devices.The wide bandgap semi-transparent perovskite solar cell(ST-PSC)fabricated using co-anti-solvent exhibited a remarkable efficiency of 14.52%,and we successfully obtained an efficiency of 22.5%for 4 T perovskite-organic TSC.These findings inspire bright futures that TSCs could facilitate the development of more effective and sustainable solar energy solutions.叠层太阳能电池技术是一种提高单结太阳能电池功率转换效率的有效策略。在本研究中,通过混合反溶剂协同作用精准调控宽带隙钙钛矿(FA_(0.8) Cs_(0.2) Pb(I_(0.6) Br_(0.4))_(3),带隙:1.77 eV)薄膜的结晶过程,获得大晶粒、无孔洞的高质量钙钛矿薄膜。该技术有效提升钙钛矿结晶,同时有效抑制非辐射复合过程,成功制备了性能良好的四端钙钛矿-有机叠层太阳能电池。研究结果表明,低沸点极性溶剂与非极性溶剂混合形成的反溶剂有助于显著提升器件性能。通过混合反溶剂制备的宽带隙半透明钙钛矿太阳能电池实现了14.52%的光电转换效率,进而构建的四端钙钛矿-有机叠层太阳能电池达到了22.5%的效率,为实现高效叠层太阳能电池及充分利用绿色能源提供了重要参考。

关 键 词：CRYSTALLIZATION ANTI-SOLVENT perovskite solar cells tandem solar cells 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]