Anti-solvent surface engineering via diethyl ether to enhance the photovoltaic conversion efficiency of perovskite solar cells to 18.76%. (January 2018)

• Record Type: Journal Article
• Authors: Gao, Yanbo; Yang, Lili; Wang, Fengyou; Sui, Yingrui; Sun, Yunfei; Wei, Maobin; Cao, Jian; Liu, Huilian
• Is Part Of: Superlattices and microstructures. Volume 113(2018)
• Page Start: 761
• Page End: 768
• Publication Date: 2018-01
• Subjects: Perovskite solar cells -- Anti-solvent surface engineering -- Power conversion efficiency; Superlattices as materials -- Periodicals; Microstructure -- Periodicals; Semiconductors -- Periodicals; Superréseaux -- Périodiques; Microstructure (Physique) -- Périodiques; Semiconducteurs -- Périodiques; 621.38152
• DOI: 10.1016/j.spmi.2017.12.015
• Languages: English
• ISSNs: 0749-6036

Abstract

Abstract: A quick and repeatable fabrication of compact CH3 NH3 PbI3 film was achieved by the anti-solvent method which consists of the one-step deposition to the CH3 NH3 PbI3 film and quickly exposition to the anti-solvent of diethyl ether. The morphology, crystalline quality and properties of the CH3 NH3 PbI3 film were found to be extraordinary influenced by the adding amount of diethyl ether. Accordingly, the native relationship between the crystal quality of perovskite films and solar cells was revealed. The CH3 NH3 PbI3 film by adding optimized 600 μL diethyl ether delivered the best power conversion efficiency (PCE) of 18.76% and average PCE of 18.41% with remarkable reproducibility. These results provide an approach to fabricate the high-quality perovskite film and encourage the researchers to further improve the PCE of perovskite solar cells from the aspect of the fabrication process. Highlights: High-quality CH3 NH3 PbI3 perovskite films were achieved by the anti-solventmethod. Photovoltaic performance of solar cells depend on the adding amount of diethyl ether. Best power conversion efficiency of 18.76% with remarkable reproducibility were achieved with optimized 600 μL diethyl ether.