Heterogeneous FASnI3 Absorber with Enhanced Electric Field for High-Performance Lead-Free Perovskite Solar Cells

被引：0
|
作者：
Tianhao Wu
Xiao Liu
Xinhui Luo
Hiroshi Segawa
Guoqing Tong
Yiqiang Zhang
Luis K. Ono
Yabing Qi
Liyuan Han
机构：
[1] Shanghai Jiao Tong University,State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering
[2] University of Tokyo,Special Division of Environmental and Energy Science, Komaba Organization for Educational Excellence (KOMEX), College of Arts and Sciences
[3] Okinawa Institute of Science and Technology Graduate University (OIST),Energy Materials and Surface Sciences Unit (EMSSU)
[4] Zhengzhou University,School of Materials Science and Engineering, Henan Institute of Advanced Technology
来源：
Nano-Micro Letters | 2022年 / 14卷
关键词：
Gradient FASnI; absorber; Built-in electric field; Bulk charge recombination; Lead-free perovskite solar cell;
D O I：
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学科分类号：
摘要：
A novel strategy to further improve the efficiency of lead-free tin perovskite solar cells by carefully controlling the built-in electric field in the absorber is described.A promising efficiency of 13.82% was obtained based on the formamidinium tin iodide (FASnI3) perovskite solar cells with a vertical Sn2+ gradient and an enhanced electric field.The solar cell with a heterogeneous FASnI3 absorber is ultrastable, maintaining over 13% efficiency after operation under 1-sun illumination for 1,000 h in air.
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