烷基铵盐对甲胺基钙钛矿薄膜质量调控及性能研究  

Investigation of Alkylammonium Salts for Quality Modulation and Performance of Methylammonium-based Perovskites

作　　者：周佳辉 欧得柳 章星月 杨祚宝[1,2] ZHOU Jiahui;OU Deliu;ZHANG Xingyue;YANG Zuobao(School of Materials and Chemical Engineering,Ningbo University of Technology,Ningbo 315211,China;Institute of Micro/Nano Materials and Devices,Ningbo University of Technology,Ningbo 315211,China;School of Resources,Environment and Materials,Guangxi University,Nanning 530004,China)

机构地区：[1]宁波工程学院材料与化学工程学院,浙江宁波315211 [2]宁波工程学院微纳米结构材料与器件创新研究院,浙江宁波315211 [3]广西大学资源环境与材料学院,广西南宁530004

出　　处：《宁波工程学院学报》2023年第4期1-9,共9页Journal of Ningbo University of Technology

基　　金：国家级大学生创新创业训练计划项目(202111058015);宁波市自然科学基金资助项目(2021J138)。

摘　　要：为了实现钙钛矿薄膜的规模化制备,以烷基铵盐(MACl)为添加剂,通过控制钙钛矿薄膜的结晶速率,获得了致密性良好且缺陷态密度较低的钙钛矿材料;通过SEM、XRD、UV-Vis和J-V系统表征了钙钛矿材料的微观结构及光电性能,探究了钙钛矿薄膜质量及器件性能提高的相关机制。研究结果表明:当MACl的摩尔分数为20%时,钙钛矿薄膜的晶粒大小及形貌达到最优值,光生载流子寿命提高了3倍以上,器件的最高光电转换率由原来的4.21%显著提升至14.17%。To achieve the large-scale preparation of perovskite thin films,alkylammonium salts(MACl)was employed as an additive to control the crystallization rate of perovskite films,resulting in perovskite materials with excellent morphology without pin holes and low defect density.The microstructure and photoelectric properties of the perovskite materials were systemically characterized by using SEM,XRD,UV-Vis,and J-V curves.The mechanisms underlying the improvement in the quality of the perovskite films and performance of the devices were investigated.The research findings indicated that when the addition of MACl is 20%,the perovskite film achieves optimal grain size and morphology.The photogenerated carrier lifetime increases by more than three times,and the maximum photoelectric conversion efficiency of the device significantly improves from the original 4.21%to 14.17%.

关 键 词：钙钛矿 太阳能电池 挥发性溶剂 烷基铵盐 

分 类 号：TM914.4[电气工程—电力电子与电力传动]