文献类型：期刊文献

英文题名：Electrodeposition of lead dioxide induces the fabrication of perovskite FAPbI(3) film and electron-transport-layer-free solar cells

作者：Li, Qiang[1];Lu, Congrong[1];Li, Chunhe[1];Ren, Kuankuan[1];Yao, Bo[1];Xu, Haitao[1];Liu, Shiyan[1];Tan, Yongsheng[1];Dou, Weidong[1];Fang, Zebo[1]

机构：[1]Shaoxing Univ, Sch Math Informat, Shaoxing 312000, Peoples R China

年份：2022

卷号：233

起止页码：515

外文期刊名：SOLAR ENERGY

收录：SCI-EXPANDED(收录号：WOS:000754411100002)、、EI(收录号：20220511576186)、Scopus(收录号：2-s2.0-85123757151)、WOS

基金：The authors are thankful for the support of the Natural Science Foundation of Zhejiang Province, China (Grant Nos. LQ22A040001, LQ21B030005, GG21F050002) , Postdoctoral Science Foundation of China (Grant Nos. 2021M692459) , National Natural Science Foundation of China (Grant No. 51872186) .

语种：英文

外文关键词：FAPbI(3) perovskite; Lead dioxide; Electrodeposition; Halide dopants; ETL-free Solar cells

外文摘要：Formamidinum based lead halide (alpha-FAPbI(3)) perovskite solar cells have refreshed the highest power conversion efficiency several times in the best Research-Cell Efficiency Chart due to its suitable bandgap. However, the non-perovskite yellow phase delta-FAPbI(3) is easily formed in the process of synthesizing the black phase alpha-FAPbI(3). To solve this problem, we provide a new method to grow pure perovskite alpha-FAPbI(3) film through electrodeposited lead dioxide (PbO2). The as-prepared alpha-FAPbI(3) shows an obvious absorption edge despite some pinholes formation during the reaction of PbO2 and FAI. By adding extra MABr during the synthesis of alpha-FAPbI(3), the size and number of pinholes can be effectively suppressed. Thus, the optimal electron-transport-layer (ETL)-free perovskite FAPbI(3) solar cells show a drastically elevated power conversion efficiency (PCE) of 10.73%, which is nearly 20 times higher than that of PbI2 based perovskite solar cells with the same device structure. These results demonstrate that the growth of PbO2 film by the electrodeposition method provides a new way for the preparation of high-efficiency perovskite solar cells. On this basis, combined with the introduction of the ETL (TiO2, SnO2, etc.) and the optimization of device fabrication processes, the PCE of the perovskite solar cells obtained by this method may be further improved in the future.