有色金属材料与工程2024，Vol.45Issue(6)：10-15,52,7.DOI:10.13258/j.cnki.nmme.20240903002
共溶剂去除钙钛矿太阳能电池残留PbI2的研究
Study on the removal for residue PbI2 in perovskite solar cells using co-solvent
摘要
Abstract
Perovskite materials have attracted significant attentions as the absorbing layers in solar devices due to their outstanding performances.This study addresses the issue of residual PbI2 in perovskite absorber layers prepared via solution methods.A three-step strategy is presented involving cleaning-passivation-annealing.Firstly,the perovskite films were cleaned with a co-solvent with the volume ratio of n-butanol to cyclohexane of 1∶4.Subsequently,the surface was passivated with a volume ratio of tert-amyl alcohol to cyclohexane solution containing phenethylammonium iodide with trifluoromethoxy groups(CF3O-PEAI)of 1∶4.Finally,annealing was performed.The strategy not only effectively removes residual lead iodide from the perovskite film surface but also improves grain density and increases the grain area,thereby optimizes the overall surface crystal morphology.The power conversion efficiency of the devices increases from 17.93%to 20.59%with a relative increase of 14.80%.The results show that this strategy effectively remove the residual PbI2 and repair the cleaned surface,and finally improve the performance of the device.关键词
钙钛矿太阳能电池/PbI2/共溶剂Key words
perovskite solar cells/PbI2/co-solvent分类
电子信息工程引用本文复制引用
毛清华,王磊,徐勇俊,程露,盛钰清..共溶剂去除钙钛矿太阳能电池残留PbI2的研究[J].有色金属材料与工程,2024,45(6):10-15,52,7.基金项目
国家自然科学基金资助项目(62241501) （62241501）
安徽省高校自然科学研究重点项目(2023AH051087) （2023AH051087）
