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Suppressed recombination for monolithic inorganic perovskite/silicon tandem solar cells with an approximate efficiency of 23%

查看全文 作　　者：Sanlong [1,2,3,4,5]Wang;Pengyang [1,2,3,4,5]Wang;Bingbing [1,2,3,4,5]Chen;Renjie [1,2,3,4,5]Li;Ningyu [1,2,3,4,5]Ren;Yucheng [1,2,3,4,5]Li;Biao [1,2,3,4,5]Shi;Qian [1,2,3,4,5]Huang;Ying [1,2,3,4,5]Zhao;Michael [1,6]Grätzel;Xiaodan [1,2,3,4,5]Zhang 高影响力作者 机构地区：[1]Institute of Photoelectronic Thin Film Devices and Technology,Renewable Energy Conversion and Storage Center,Solar Energy Conversion Center,Nankai University,Tianjin,300350,PR China;[2]Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Tianjin,300350,PR China;[3]Haihe Laboratory of Sustainable Chemical Transformations,Tianjin,300192,PR China;[4]Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education,Tianjin,300350,PR China;[5]Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin,300072,PR China;[6]Laboratory of Photonics and Interfaces,Ecole Polytechnique Federale de Lausanne,Lausanne,1015,Switzerland高影响力机构 出　　处：《eScience》索引2022年第2卷第3期,共8页高影响力期刊 基　　金：support of National Key Research and Development Program of China(Grant No.2018YFB1500103);the Joint Funds of the National Natural Science Foundation of China(Grant No.U21A2072);the National Natural Scicence Foundation of China(Grant No.62104115);the Natural Science Foundation of Tianjin(No.20JCQNJC02070);China Postdoctoral Science Foundation(No.2020T130317);the Overseas Expertise Introduction Project for Discipline Innovation of Higher Education of China(Grant No.B16027);Tianjin Science and Technology Project(Grant No.18ZXJMTG00220);Key R&D Program of Hebei Province(No.19214301D);Financial support was provided by the Haihe Laboratory of Sustainable Chemical Transformations,and the Fundamental Research Funds for the Central Universities,Nankai University。 摘　　要：Potentially temperature-resistant inorganic perovskite/silicon tandem solar cells(TSCs)are promising devices for boosting efficiency past the single-junction silicon limit.However,undesirable non-radiative recombination generally leads to a significant voltage deficit.Here,we introduce an effective strategy using nickel iodide,an inorganic halide salt,to passivate iodine vacancies and suppress non-radiative recombination.NiI_(2)-treated CsPbI_(3-x)Br_(x) inor-ganic perovskite solar cells with a 1.80 eV bandgap exhibited an efficiency of 19.53%and a voltage of 1.36 V,corresponding to a voltage deficit of 0.44 V.Importantly,the treated device demonstrated excellent operational stability,maintaining 95.7%of its initial efficiency after maximum power point tracking for 300 h under continuous illumination in a N_(2) atmosphere.By combining this inorganic perovskite top cell with a narrower bandgap silicon bottom cell,we for the first time achieved monolithic inorganic perovskite/silicon TSCs,which exhibited an effi-ciency of 22.95%with an open-circuit voltage of 2.04 V.This work provides a promising strategy for using inorganic passivation materials to achieve efficient and stable solar cells. 关 键 词：Inorganic perovskite Tandem solar cell Recombination Surface passivation
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