Fabrication of thin film for triple-cation perovskite via hot-bar-coating method without post-annealing process

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS Thin Solid Films Pub Date : 2024-11-15 DOI:10.1016/j.tsf.2024.140563

Shogo Miyake , Genya Uzurano , Akihiko Fujii , Masanori Ozaki

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Abstract

The triple-cation perovskite Cs_0.05(MA_0.17FA_0.83)_0.95Pb(I_0.83Br_0.17)₃ was deposited using the hot-bar-coating method. The effects of the substrate temperature and coating bar sweep speed on the film quality were investigated. Coating the precursor solution at a substrate temperature of 150 °C, reduced fabrication time by eliminating the post-annealing process, which is essential to conventional film fabrication methods, i.e., the antisolvent method. We further investigated the dependence of thin film thickness and quality on the coating bar sweep speed, finding that the optimal film quality was achieved at a speed of 4 mm/s. Importantly, decomposition into PbI₂ was not observed during film fabrication for the triple-cation perovskite. The results of solar cell property measurements, indicating that the fabricated devices maintained high performance for 500 h in ambient air, suggest that the hot-bar-coating method is a promising approach for producing perovskite solar cells with high atmospheric stability and potentially low cost.

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通过热棒涂层法制造三阳离子过氧化物薄膜，无需后退火工艺

采用热棒镀膜法沉积了三阳离子包晶石 Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3。研究了基底温度和镀膜棒扫描速度对薄膜质量的影响。在 150 ℃ 的基底温度下涂覆前驱体溶液，省去了传统薄膜制造方法（即反溶剂法）中必不可少的后退火过程，从而缩短了制造时间。我们进一步研究了薄膜厚度和质量与镀膜棒扫描速度的关系，发现在扫描速度为 4 mm/s 时薄膜质量最佳。重要的是，在三阳离子包晶体的薄膜制造过程中，没有观察到分解成 PbI2 的现象。太阳能电池性能测量结果表明，制造出的器件在环境空气中放置 500 小时后仍能保持高性能，这表明热棒镀膜法是生产具有高大气稳定性和潜在低成本的包光体太阳能电池的一种可行方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin Solid Films 工程技术-材料科学：膜

CiteScore

4.00

自引率

4.80%

发文量

381

审稿时长

7.5 months

期刊介绍： Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.