Manipulation of the crystallization of perovskite films induced by a rotating magnetic field during blade coating in air. Issue 9 (12th February 2018)

• Record Type: Journal Article
• Authors: Lin, Yichuan; Ye, Xiaoqin; Wu, Zhiming; Zhang, Chunquan; Zhang, Yulong; Su, Haifeng; Yin, Jun; Li, Jing
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 9(2018)
• Page Start: 3986
• Page End: 3995
• Publication Date: 2018-02-12
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7ta09721b
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A rotating magnetic field (RMF) was employed to manipulate the crystallization of perovskite films during blade coating. Abstract : The blade coating process, which exhibits the merits of rapid film growth and less consumption of materials, has been regarded as a promising method for the fabrication of scalable perovskite films. However, achieving controllable film growth with a high quality is still a challenge. Herein, a rotating magnetic field (RMF) is proposed to manipulate the crystallization of perovskite thin-films during blade coating in air. Improved film quality with good surface coverage and efficient charge transportation has been successfully accomplished in the as-produced smooth, uniform and dense perovskite layers. Thus, an enhanced photovoltaic performance with an average increase of ∼15% in power conversion efficiency was realized in devices configured on the RMF-manipulated perovskite (CH3 NH3 PbI3 ) thin-film when compared with that of the conventional devices. This work well demonstrates a novel strategy to physically manipulate the crystallization of perovskite films with the purpose of a controllable and low-cost fabrication of high performance PSCs.