无机材料学报2023，Vol.38Issue(12)：1387-1395,中插3-中插6,13.DOI:10.15541/jim20230098
超长稳定的混合阳离子钙钛矿太阳能电池性能优化研究
Performance Optimization of Ultra-long Stable Mixed Cation Perovskite Solar Cells
摘要
Abstract
Perovskite solar cells(PSCs)are developing rapidly and their power conversion efficiency(PCE)has been repeatedly refreshed,but their long-term stability still needs to be improved.At present,most of the preparation of high-efficiency PSCs is completed in the inert gas,with high cost and limited operating space,which is not conducive to its industrial application.Here,perovskite solar cells with mixed cation,displaying ultra-long stability,were successfully prepared in the air.Effects of A-site cation doping on the microstructure,optoelectronic properties and stability of the perovskite were systematically investigated.The experimental results show that FA+ and Cs+ co-doping improves the quality of perovskite films,modulates the energy level arrangement of perovskite/SnO2,suppresses carrier complexation,and significantly improves the PCE,long-term,wet and thermal stability of the cell.The optimal PCE of Cs0.05MA0.35FA0.6PbI3 cells is 19.34%,maintaining 85%of the initial efficiency after reserving for 242 d in dark environment at(20±5)℃and<5%relative humidity.In contrast,the PCE of the MAPbI3 cell decreased to 30%of the initial value after reserving for 112 d under the same test conditions.FA+ and Cs+ co-doping also significantly improved the thermal and moisture resistance of the cells.Cs0.05MA0.35FA0.6PbI3 PSCs remain 99%and 84%of initial PCE after aging for 96 h at(85±5)℃and 20%-30%relative humidity,(20±5)℃and 80%-90%relative humidity in the dark,respectively.In contrast,PCEs of MAPbI3 PSCs under the same conditions remain only 70%and 56%.This study provides a reference for the preparation of highly efficient and ultra-long stable mixed cation solar cells in the air.关键词
钙钛矿太阳能电池/混合阳离子/长期稳定性/全空气环境制备Key words
perovskite solar cell/mixed cation/long-term stability/full-air environment preparation分类
化学化工引用本文复制引用
马婷婷,汪志鹏,张梅,郭敏..超长稳定的混合阳离子钙钛矿太阳能电池性能优化研究[J].无机材料学报,2023,38(12):1387-1395,中插3-中插6,13.基金项目
国家自然科学基金(52172137,51772023,51572020)National Natural Science Foundation of China(52172137,51772023,51572020) （52172137,51772023,51572020）
