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Manipulation of the crystallization of perovskite films induced by a rotating magnetic field during blade coating in air

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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 (CH3NH3PbI3) 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.

Graphical abstract: Manipulation of the crystallization of perovskite films induced by a rotating magnetic field during blade coating in air

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Publication details

The article was received on 04 Nov 2017, accepted on 29 Jan 2018 and first published on 30 Jan 2018


Article type: Paper
DOI: 10.1039/C7TA09721B
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Manipulation of the crystallization of perovskite films induced by a rotating magnetic field during blade coating in air

    Y. Lin, X. Ye, Z. Wu, C. Zhang, Y. Zhang, H. Su, J. Yin and J. Li, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C7TA09721B

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