Gravure-Printed Flexible Perovskite Solar Cells: Toward Roll-to-Roll Manufacturing
Gravure-Printed Flexible Perovskite Solar Cells: Toward Roll-to-Roll Manufacturing
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DOI：
10.1002/advs.201802094
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发表时间：
2019-04-03
期刊：
影响因子：
15.1
通讯作者：
Seo, Jangwon
中科院分区：
文献类型：
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作者：
Kim, Young Yun;Yang, Toe-Youl;Seo, Jangwon
钙钛矿太阳能电池(PSCs)的最新进展使其效率超过23%，并具有灵活性和溶液可加工性等优越优势，使得PSCs可以通过高通量和低成本的滚转(R2R)工艺制造。可伸缩沉积工艺的发展是实现柔性PSCS R2R生产的关键。凹版印刷是一种很有前途的选择，它可以使用R2R工艺直接打印出所需的任意形状和大小的层。这里，柔性PSC是通过凹版印刷制造的。对印刷油墨和工艺参数进行了优化，以获得光滑均匀的薄膜。SnO2纳米颗粒通过降低表面张力而均匀印刷。通过优化印刷参数和后续的抗溶剂浴，成功地形成了钙钛矿层。2，2‘，7，7’-四-(N，N-di-4-methoxyphenylamino)-9，9‘-spirobifluorene)也被成功印制。全凹版印刷器件显示出17.2%的冠军效率，最大功率点跟踪效率为15.5%(1000 S)。还展示了基于两步沉积钙钛矿层的凹印柔性PSC。此外，还演示了一种基于凹版印刷的R2R工艺。基于两步法制备钙钛矿层的部分R2R工艺的PSCs获得了9.7%的最高效率。
Recent advances in perovskite solar cells (PSCs) have resulted in greater than 23% efficiency with superior advantages such as flexibility and solution-processability, allowing PSCs to be fabricated by a high-throughput and low-cost roll-to-roll (R2R) process. The development of scalable deposition processes is crucial to realize R2R production of flexible PSCs. Gravure printing is a promising candidate with the benefit of direct printing of the desired layer with arbitrary shape and size by using the R2R process. Here, flexible PSCs are fabricated by gravure printing. Printing inks and processing parameters are optimized to obtain smooth and uniform films. SnO2 nanoparticles are uniformly printed by reducing surface tension. Perovskite layers are successfully formed by optimizing the printing parameters and subsequent antisolvent bathing. 2,2',7,7'-Tetrakis-(N,N-di-4-methoxyphenylamino)-9,9'-spirobifluorene is also successfully printed. The all-gravure-printed device exhibits 17.2% champion efficiency, with 15.5% maximum power point tracking efficiency for 1000 s. Gravure-printed flexible PSCs based on a two-step deposition of perovskite layer are also demonstrated. Furthermore, a R2R process based on the gravure printing is demonstrated. The champion efficiency of 9.7% is achieved for partly R2R-processed PSCs based on a two-step fabrication of the perovskite layer.