Presentation Information

[18p-P09-23]Bar-Coating Method for Perovskite Layer under Ambient Conditions

〇Yuka Ando1, Tomoyuki Tobe1,3, Masashi Ikegami1, Tsutomu Miyasaka2 (1.Graduate School of Engineering,toin Univ of yokohama, 2.Faculty of Biomedical Engineering, 3.KISTEC)
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Keywords:

Perovskite materials,bar coating

Achieving practical applications for flexible perovskite solar cells requires a large-area and uniform perovskite coating method. In our laboratory, we have been developing large-area printing using inkjet methods. Additionally, for high-speed printing, we are also exploring bar coating methods. Perovskite coatings typically require low humidity during application and the use of solvents like chlorobenzene as an anti-solvent to form a smooth perovskite layer.
We have been investigating methods to fabricate high-efficiency thin-film perovskite solar cells under conditions of up to approximately 30% humidity, using spin-coating with an anti-solvent. Our inkjet method does not use an anti-solvent; instead, it involves dropping precursor solutions onto heated substrates.
We're studying the feasibility of coating perovskite layers using bar coating with heated substrates. In preliminary experiments at 50% or higher humidity, we achieved 7% efficiency in fabricating solar cells.

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