Yang Haifeng, Zhang Jincheng, Zhang Chunfu, Chang Jingjing, Lin Zhenhua, Chen Dazheng, Xi He, Hao Yue
Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China.
College of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji 721016, China.
Materials (Basel). 2017 Jul 21;10(7):837. doi: 10.3390/ma10070837.
In this work, efficient mixed organic cation and mixed halide (MAFAPb(IBr)₃) perovskite solar cells are demonstrated by optimizing annealing conditions. AFM, XRD and PL measurements show that there is a better perovskite film quality for the annealing condition at 100 °C for 30 min. The corresponding device exhibits an optimized PCE of 16.76% with of 1.02 V, of 21.55 mA/cm² and FF of 76.27%. More importantly, the mixed lead halide perovskite MAFAPb(IBr)₃ can significantly increase the thermal stability of perovskite film. After being heated at 80 °C for 24 h, the PCE of the MAFAPb(IBr)₃ device still remains at 70.00% of its initial value, which is much better than the control MAPbI₃ device, where only 46.50% of its initial value could be preserved. We also successfully fabricated high-performance flexible mixed lead halide perovskite solar cells based on PEN substrates.
在这项工作中，通过优化退火条件展示了高效的混合有机阳离子和混合卤化物（MAFAPb(IBr)₃）钙钛矿太阳能电池。原子力显微镜（AFM）、X射线衍射（XRD）和光致发光（PL）测量表明，在100°C下退火30分钟的条件下，钙钛矿薄膜质量更好。相应的器件表现出优化的功率转换效率（PCE）为16.76%，开路电压（Voc）为1.02 V，短路电流密度（Jsc）为21.55 mA/cm²，填充因子（FF）为76.27%。更重要的是，混合卤化铅钙钛矿MAFAPb(IBr)₃可以显著提高钙钛矿薄膜的热稳定性。在80°C下加热24小时后，MAFAPb(IBr)₃器件的PCE仍保持其初始值的70.00%，这比对照的MAPbI₃器件要好得多，后者仅能保留其初始值的46.50%。我们还成功地基于聚萘二甲酸乙二醇酯（PEN）衬底制造了高性能的柔性混合卤化铅钙钛矿太阳能电池。
