Highly efficient p-i-n perovskite solar cells that endure temperature variations
Highly efficient p-i-n perovskite solar cells that endure temperature variations
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DOI：
10.1126/science.add7331
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发表时间：
2023-01-27
期刊：
影响因子：
56.9
通讯作者：
Abate, Antonio
中科院分区：
文献类型：
--
作者：
Li, Guixiang;Su, Zhenhuang;Abate, Antonio
每日温度变化诱导卤化物钙钛矿中的相变和晶格应变，挑战它们在太阳能电池中的稳定性。我们使用β-聚（1，1-二氟乙烯）的有序偶极结构来控制钙钛矿膜结晶和能量排列，从而稳定钙钛矿黑相并改善太阳能电池性能。我们展示了p-i-n钙钛矿太阳能电池，其功率转换效率在18平方毫米上为24.6%，在1平方厘米上为23.1%，在25度和75度C下分别进行1000小时的1日最大功率点跟踪后，其效率分别为96%和88%。在-60摄氏度和+80摄氏度之间的快速热循环下，器件没有显示出疲劳的迹象，这表明有序的偶极结构对钙钛矿太阳能电池的操作稳定性的影响。
Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability in solar cells. We stabilized the perovskite black phase and improved solar cell performance using the ordered dipolar structure of beta-poly(1,1-difluoroethylene) to control perovskite film crystallization and energy alignment. We demonstrated p-i-n perovskite solar cells with a record power conversion efficiency of 24.6% over 18 square millimeters and 23.1% over 1 square centimeter, which retained 96 and 88% of the efficiency after 1000 hours of 1-sunmaximum power point tracking at 25 degrees and 75 degrees C, respectively. Devices under rapid thermal cycling between -60 degrees and +80 degrees C showed no sign of fatigue, demonstrating the impact of the ordered dipolar structure on the operational stability of perovskite solar cells.