文献类型：期刊文献

英文题名：Halide-chalcogenide hetero-structure for efficient and stable perovskite solar cells

作者：Nie, Riming[1];Wei, Zeliang[1];Mehta, Aarti[2];Chao, Lingfeng[3,4];Gao, Jiaxing[1];Chu, Weicun[1];Li, Zhongping[5];Miao, Han[6];Chen, Yonghua[3,4];Guo, Wanlin[1]

机构：[1]Nanjing Univ Aeronaut & Astronaut, Inst Frontier Sci, State Key Lab Mech & Control Mech Struct, Key Lab Intelligent Nano Mat & Devices,Minist Educ, Nanjing 210016, Peoples R China;[2]Ulsan Natl Inst Sci & Technol UNIST, Dept Energy & Chem Engn, 50 UNIST Gil, Ulsan 44919, South Korea;[3]Nanjing Tech Univ Nanjing Tech, Sch Flexible Elect Future Technol, Key Lab Flexible Elect KLoFE, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China;[4]Nanjing Tech Univ Nanjing Tech, Inst Adv Mat IAM, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China;[5]Jilin Univ, Coll Chem, Changchun 130012, Peoples R China;[6]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：462

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20231013682111);WOS:【SCI-EXPANDED(收录号:WOS:000953382800001)】；

基金：This work was supported by National Natural Science Foundation of China (52203359), Fundamental Research Funds for the Central Universities (NS2022092), National Key Research and Development Program of China (2019YFA0705400), Natural Science Foundation of Jiangsu Province (BK20212008), the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (MCMS-I-0421K01, MCMS-I-0422K01), the Fundamental Research Funds for the Central Universities (NJ2022002), A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

语种：英文

外文关键词：Halide-chalcogenide hetero-structure; Bi 2 S 3 quantum dots; Perovskite solar cells; Crystal orientation; Charge transfer

摘要：Organic-inorganic halide perovskite solar cells (PSCs) have experienced rapid growth in power conversion ef-ficiencies (PCEs), however, their commercialization is limited by their inherent poor long-term stability. Mixed halide and chalcogenide is a good pathway to fabricate highly efficient and stable solar cells. Here, we con-structed halide-chalcogenide hetero-structure in PSCs by incorporating Bi2S3 quantum dots (QDs) into 2,2 ',7,7 '- tetrakis-(N,N-di-4-methoxyphenylamino)-9,9 '-spirobifluorene (spiro-OMeTAD). The construction of halide-chalcogenide hetero-structure optimizes the energy level matching between spiro-OMeTAD and perovskite, in-hibits the decomposition of alpha-phase FAPbI3 and the formation of delta-phase FAPbI3, increases the hole mobility of spiro-OMeTAD, reduces the defect density, and passivates the defect states. The solar cells with halide-chalcogenide hetero-structure prepared by 0.5 mg/mL Bi2S3 QDs exhibited the highest PCE of 23.31% at stan-dard air mass 1.5 global with enhanced humidity stability. This work provides a perspective on the introduction of halide-chalcogenide hetero-structure to enhance the stability of PSCs.