摘要
基于CH_3NH_3PbX_3(X=Cl,Br,I)材料的钙钛矿太阳电池由于其简单的制作工艺和较高的光电转换效率在近年来吸引了大量的研究。报道了在电子传输层(PCBM层)中掺杂二氧化钛纳米粒子从而提高反式结构钙钛矿太阳电池的性能。通过掺杂二氧化钛纳米粒子,使电子传输层的能级和钙钛矿层的能级更加匹配,从而改善了电子的传输和收集并抑制了正负电荷复合,提高了钙钛矿太阳电池的短路电流密度和填充因子。光电转换效率从原来的12.1%提高到了13.5%。结果表明,在PCBM层掺杂二氧化钛纳米粒子是一种简单有效的提高钙钛矿太阳电池的性能的方法。
CH3NH3PbX3(X=Cl,Br,or I)based perovskite solar cells have attracted great attention due to the simple processing and high performance.The effect of doping titanium oxide nano-particles(TiO2NPs)into the electron transport layer(PCBM)of inverted perovskite solar cells were investigated.By using TiO2NPs,the work functions of perovskite solar cells were more matched,improving the electron transportation and collection.The power conversion efficiency of perovskite solar cells was impvoved from12.1%to13.5%,with enhanced short circuit current density and fill factor.The improved perovskite solar cells showed almost no hysteresis.Our results indicate that,doping titanium oxide nano-particles(TiO2NPs)into PCBM layer is a simple and effective way for developing high performance perovskite solar cells.
作者
谢小银
刘冠辰
徐重阳
柳志海
Xie Xiaoyin;Liu Guanchen;Xu Chongyang;Liu Zhihai(Jilin Institute of Chemical Technology, Jilin 132022, P. R . China;Flexible Division, Zhangjiagang Kangdexin Optronics Materal Co. , Ltd. , Suzhou 215634,P.R.China;Bio-Nano Research Institute, Gachon University,Gyeonggi 461701,P.R.Korea)
出处
《科学技术与工程》
北大核心
2017年第33期286-290,共5页
Science Technology and Engineering
基金
吉林省科技厅资助项目(20140204086GX)资助
关键词
二氧化钛纳米粒子
钙钛矿太阳电池
能量转换效率
电子迁移率
titanium oxide nano-particles
perovsktte solar cells
power conversion efficiency
electron mobility
