Lu Zhen, Wang Shangzhi, Liu Huijun, Feng Feng, Li Wenhua
College of Chemistry and Environmental Engineering, ShanXi DaTong University, Datong 037009, China.
Nanomaterials (Basel). 2019 Feb 5;9(2):204. doi: 10.3390/nano9020204.
As the most promising material for thin-film solar cells nowadays, perovskite shine for its unique optical and electronic properties. Perovskite-based solar cells have already been demonstrated with high efficiencies. However, it is still very challenging to optimize the morphology of perovskite film. In this paper we proposed a smooth and continuous perovskite active layer by treating the poly (3, 4-ethylenedioxythiophene): poly (styrenesulphonate) (PEDOT:PSS) with pre-perovskite deposition and dimethylsulfoxide (DMSO) rinse. The scanning electron microscope (SEM) and atomic force microscope (AFM) images confirmed a perovskite active layer consisting of large crystal grains with less grain boundary area and enhanced crystallinity. The perovskite devices fabricated by this method feature a high power conversion efficiency (PCE) of 11.36% and a short-circuit current () of 21.9 mAcm.
作为当今薄膜太阳能电池最具前景的材料，钙钛矿因其独特的光学和电子特性而备受瞩目。基于钙钛矿的太阳能电池已被证明具有高效率。然而，优化钙钛矿薄膜的形貌仍然极具挑战性。在本文中，我们通过在钙钛矿前驱体沉积前处理聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT:PSS）并使用二甲基亚砜（DMSO）冲洗，提出了一种光滑连续的钙钛矿活性层。扫描电子显微镜（SEM）和原子力显微镜（AFM）图像证实了钙钛矿活性层由大晶粒组成，晶界面积较小且结晶度增强。通过这种方法制备的钙钛矿器件具有11.36%的高功率转换效率（PCE）和21.9 mAcm的短路电流（）。
