氯苯反溶剂制备p-i-n型钙钛矿太阳能电池的性能优化  

Performance optimization of p-i-n type perovskite solar cells by using chlorobenzene as an anti-solvent

作　　者：闻沚玥 叶小琴 凌寒冰 张睿[2] 夏江滨[2] 沈王强 卢兴[1] WEN Zhiyue;YE Xiaoqin;LING Hanbing;ZHANG Rui;XIA Jiangbin;SHEN Wangqiang;LU Xing(School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China;College of Chemistry and Molecular Science,Wuhan University,Wuhan,Hubei 430072,China)

机构地区：[1]华中科技大学材料科学与工程学院,湖北武汉430074 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《福州大学学报（自然科学版）》2020年第6期812-819,共8页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家杰出青年科学基金资助项目(21925104);2019年度全国博士后创新人才支持计划(BX20190124)。

摘　　要：在使用反溶剂辅助的一步旋涂法制备钙钛矿太阳能电池(Pero-SCs)中的钙钛矿层时,结合前驱体溶液的溶剂组分和反溶剂的滴加时间与用量来探索最优制备条件.将氯苯作为反溶剂,在碘化铅(PbI 2)∶氯化铅(PbCl 2)∶甲基碘化铵(MAI)=1.25∶0.15∶1.30(摩尔浓度比)、溶剂为γ-丁内酯(GBL)和二甲基亚砜(DMSO)的体系中,当前驱体溶液溶剂体积比为7∶3,反溶剂用量为500μL,反溶剂滴加时间为倒数第10 s时,制备的钙钛矿薄膜晶粒小且致密,表面粗糙度较小,结晶度、吸光度和缺陷状态均为最佳,最终得到的最佳电池效率为14.90%.When the antisolvent-assisted one-step spin coating method was used to prepare the perovskite films in perovskite solar cells(Pero-SCs),a certain anti-solvent to explore the best preparation method,combining the solvent composition of the perovskite precursor solution and the dripping time and volume of anti-solvent.Accordingly,the system in which the ratio of PbI 2,PbCl 2 and MAI was 1.25∶0.15∶1.30(molar concentration ratio)and the solvents of perovskite precursor solution wereγ-butyrolactone(GBL)and dimethylsulfoxide(DMSO)were explored by using the chlorobenzene as an anti-solvent.The perovskite film had smaller and denser crystal grains,lower surface roughness and the best crystallinity,absorbance and defect state condition under the optimal conditions,which were 7∶3 for the volume ratio of the solvents,500μL for the volume of chlorobenzene and the last 10th second before the spin-coating process was finished for the dripping time.Finally,the optimum efficiency of the devices was 14.90%.

关 键 词：氯苯 反溶剂 体积比 滴加时间 界面 钙钛矿太阳能电池 

分 类 号：TM914.4[电气工程—电力电子与电力传动]