有机-无机杂化钙钛矿太阳能电池具有制备成本低、光电转换效率(Photoelectric Conversion Efficiency，PCE)高的巨大优势，显示出广阔的商业化前景。经过十几年的深入研究，钙钛矿太阳能电池(Perovskite Solar Cells，PSCs)的实验室器件(＜1 cm2)、大面积器件(1～10 cm2)、迷你模组级器件(10～800 cm2)和模组级器件(＞800 cm2)的最高认证PCE已分别提升至26。10％、24。35％、22。40％和18。60％。随着PSCs面积扩大，PCE急剧下降，这主要是因为制备方法的局限性，难以获得高质量的大面积钙钛矿薄膜。实验室器件常采用的旋涂法难以应用到实际生产中，目前大面积钙钛矿薄膜的制备方法主要有刮涂法和狭缝涂布法，但其存在薄膜成核结晶过程难以精确控制等问题。本文从大面积有机-无机杂化钙钛矿薄膜的制备方法入手，介绍了大面积钙钛矿层成膜机制及薄膜质量提升策略。最后，对未来高PCE、高稳定性的大面积PSCs的制备技术和应用进行了展望，旨在对高性能的大面积PSCs研究提供有益参考。
Progress on Large-area Organic-inorganic Hybrid Perovskite Films and Its Photovoltaic Application
Recently,organic-inorganic hybrid perovskite solar cells have demonstrated a broad commercial prospect due to their high photoelectric conversion efficiency(PCE)and low fabricating costs.During the past decades,the highest reported PCE of small-area(＜1 cm2)perovskite solar cells(PSCs)rose to 26.10％,and those of large-area(1-10 cm2),mini-module level(10-800 cm2)and module level(＞800 cm2)PSCs increased to 24.35％,22.40％and 18.60％,respectively.The performance of PSCs decreases dramatically with the area increasing due to limitation of the deposition method and the poor quality of large-area perovskite films.Spin-coating method is not suitable for actual industrial production,while the scalable deposition methods including blade-coating and slot-die coating still face the difficulty of precisely controlling nucleation and crystallization of the perovskite films with large area.This review summarized preparation methods of large-area perovskite films,and discussed the film-forming mechanism and strategies for high-quality perovskite films.Finally,relevant outlooks on technologies and applications for large-area PSCs with high performances and stabilities were analyzed.This review is expected to provide insights on the research of large-area PSCs with high performance.
perovskite filmperovskite solar celllarge areafilm-forming controlreview
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