Two-step ultrasonic spray deposition of CH3NH3PbI3 for efficient and large-area perovskite solar cell. (September 2016)

• Record Type: Journal Article
• Authors: Huang, Haibo; Shi, Jiangjian; Zhu, Lifeng; Li, Dongmei; Luo, Yanhong; Meng, Qingbo
• Is Part Of: Nano energy. Volume 27(2016:Sep.)
• Page Start: 352
• Page End: 358
• Publication Date: 2016-09
• Subjects: Perovskite solar cell -- CH3NH3PbI3 deposition -- Ultrasonic spray -- Large-area; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2016.07.026
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: A two-step ultrasonic spray method has been developed to fabricate centimeter-scale uniform and smooth perovskite CH3 NH3 PbI3 films for efficient and large-area solar cells. Aside from the advantages in larger area and higher smoothness, the perovskite films deposited by this method showed better crystallinity, lower non-radiative recombination and more efficient interfacial charge extraction properties. Through systematical optimizations, an efficient mesoscopic solar cell was finally achieved with efficiency of 16.03%. Furthermore, large-area (1×1 cm 2 ) cell was also fabricated, giving an efficiency of 13.09%. This work demonstrates that the two-step spray method can be a promising alternative to deposit high-quality and large-area perovskite absorbers to afford high cell performance. Graphical abstract: Highlights: Two-step spray method is developed to deposit perovskite film in ambient conditions. Perovskite film deposited by this method has high crystalline quality and few defects. Perovskite solar cells with efficiency as high as 16% were constructed by this method. Large-area (1×1 cm 2 ) cell with efficiency of 13% has also been fabricated.