A mixed-cation lead iodide MA_(1-x)EA_xPbI_3 absorber for perovskite solar cells

作     者：Yong Wang Taiyang Zhang Ge Li Feng Xu Tian Wang Yihui Li Yang Yang Yixin Zhao 

作者机构：School of Environmental Science and EngineeringShanghai Jiao Tong University Clean Energy Research InstituteChina Huaneng Group 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2018年第27卷第1期

页      面：215-218页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the support of the NSFC(Grant 51372151 and21303103) Huoyingdong Grant(151046) 

主　　题：Mixed cation Ethylammonium MA1 xEAxPbl3 Perovskite solar cell 

摘      要：The mixed-cation lead halide perovskites have emerged as a new class of promising light harvesting materials for solar cells. The formamidinium（FA）, methylammonium（MA） and Cs cations are widely studied in the field of mixed-cation perovskites. Here, we have investigated ethylammonium（EA） as an alternative cation to fabricate a mixed-cation perovskite of MA_（1-x）EA_xPbI_3. We have characterized the materials using the X-ray diffraction（XRD）, scanning electron microscope（SEM）, and UV–vis spectrum. Our results have confirmed the successful incorporation of EA cations into MAPbI_3. Interestingly, the optimal amount of EA to achieve the best performance is quite low. This is different from the FA–MA mixed-cation perovskites although EA and FA have similar radii. In short, the EA–MA mixed-cation perovskite has some material and device properties highly distinguishable from the FA–MA one.