钙钛矿(结构)
三碘化物
能量转换效率
材料科学
接口(物质)
光电子学
纳米技术
化学工程
化学
物理化学
复合材料
电极
工程类
电解质
毛细管作用
色素敏化染料
毛细管数
作者
Yihui Zou,Chang‐Hong Lin,Haihua Hu,Huilin Li,Ping Lin,Peng Wang,Lingbo Xu,Xiaoping Wu,Can Cui
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2023-09-18
卷期号:6 (19): 9994-10004
被引量:2
标识
DOI:10.1021/acsaem.3c01580
摘要
An electron transport layer (ETL)/perovskite interface with abundant defects and energy level mismatch can lead to severe nonradiative recombination and reduce the efficiency in perovskite solar cells (PSCs). Thus, achieving an excellent ETL/perovskite interface is crucial for the development of high-efficiency PSCs. Herein, we present a method to enhance the interface between SnO2 and the perovskite using an inorganic phosphate compound with appropriate functional groups. By leveraging the multifunctional effects of Sn4+ and Pb2+ ions and P═O bonds, as well as the formation of hydrogen bonds between the perovskite and phosphate, we successfully engineered an exceptional interface characterized by a reduced number of defect states and improved energy level alignment. The optimization of the SnO2/perovskite interface led to an impressive power conversion efficiency of 21.84% for methylammonium lead triiodide (MAPbI3) PSCs, with improved stability in the air environment. The findings of our work present an effective strategy for modifying the ETL/perovskite interface with suitable functional groups for high-performance and stable PSCs.
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