Huang Jin, Li Yi Ming, Wang Hao, Zhang Fang Hui, Zhang Dan
School of Electronic Information and Artificial Intelligence, Shannxi University of Science & Technology, Xi'an 710021, China.
School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China.
ACS Appl Mater Interfaces. 2022 May 4;14(17):20230-20236. doi: 10.1021/acsami.2c02373. Epub 2022 Apr 22.
Owing to the instability of organic materials, an inorganic perovskite solar cell (PSC) attracts much attention in recent years. However, the instability of phase and overmuch traps lead to the inferior performance of inorganic perovskite solar cell, a high performance inorganic PSC is desirable. The element of cerium possesses a suitable chemical and physcial properties to substitute lead. We utilize cerium to partially substitute lead, a lead-cerium (Pb-Ce) bimetal based inorganic PSC is successfully achieved to modify the stability of PSC, the CsPbCeI based PSC exhibits a champion PCE (power conversion efficiency) of 17.57%, and the tolerance of thermal, illumination, and environmental are enhanced among 10-20%. The enhanced PCE is ascribed to the structure of lead-cerium (Pb-Ce) bimetal perovskite absorbing layers and high quality of perovskite film.
由于有机材料的不稳定性，近年来无机钙钛矿太阳能电池（PSC）备受关注。然而，相的不稳定性和过多的陷阱导致无机钙钛矿太阳能电池性能较差，因此需要高性能的无机PSC。铈元素具有合适的化学和物理性质来替代铅。我们利用铈部分替代铅，成功制备了基于铅铈（Pb-Ce）双金属的无机PSC以改善PSC的稳定性，基于CsPbCeI的PSC展现出17.57%的最佳功率转换效率（PCE），并且在热、光照和环境耐受性方面提高了10%-20%。PCE的提高归因于铅铈（Pb-Ce）双金属钙钛矿吸收层的结构和高质量的钙钛矿薄膜。
