Printing High-Efficiency Perovskite Solar Cells in High-Humidity Ambient Environment-An In Situ Guided Investigation.
Printing High-Efficiency Perovskite Solar Cells in High-Humidity Ambient Environment-An In Situ Guided Investigation.
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在高湿度环境中印刷高效钙钛矿型太阳能电池--现场指导调查。
DOI：
10.1002/advs.202003359
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发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Li G
中科院分区：
文献类型：
--
作者：
Fong PW;Hu H;Ren Z;Liu K;Cui L;Bi T;Liang Q;Wu Z;Hao J;Li G
对钙钛矿太阳能电池（PSCs）进行了广泛的研究，并取得了显著的性能进步（主要是自旋涂层技术），这鼓励了最近用于制造PSCs的可扩展涂层技术的努力。然而，由于功率转换效率（PCE）高度依赖于受控环境中的形貌和结晶动力学以及精细的溶剂系统工程，叶片涂层技术制造的器件不如最先进的自旋涂层器件。在这项研究中，基于广泛研究的钙钛矿溶液体系二甲甲酰胺-二甲基亚砜，在55±5%的高相对湿度下，空气刀辅助环境制备了psc。采用深度时间分辨紫外-可见光谱法研究了溶剂去除率和结晶速率对结晶动力学和形貌的影响，这两个因素是由于水分的存在而影响结晶动力学和形貌的关键因素。紫外-可见光谱法能够准确测定湿前驱体膜的厚度。在0.06和1 cm2器件上，无迟滞PSCs的抗溶剂、高湿环境涂层的PCEs分别为21.1%和18.0%。这些psc表现出与在手套箱中制造的psc相当的稳定性，从而显示出它们的高潜力。在这项工作中，钙钛矿太阳能电池（PSC）在环境条件下通过可扩展的溶液工艺制备。在室温和相对湿度为55%的条件下，证明了一种无迟滞、高效率（21.1%）、层流空气刀辅助的PSCs半月板涂层。利用时间分辨紫外-可见光谱对其成核动力学进行了深入的原位研究。
Extensive studies are conducted on perovskite solar cells (PSCs) with significant performance advances (mainly spin coating techniques), which have encouraged recent efforts on scalable coating techniques for the manufacture of PSCs. However, devices fabricated by blade coating techniques are inferior to state‐of‐the‐art spin‐coated devices because the power conversion efficiency (PCE) is highly dependent on the morphology and crystallization kinetics in the controlled environment and the delicate solvent system engineering. In this study, based on the widely studied perovskite solution system dimethylformamide–dimethyl sulfoxide, air‐knife‐assisted ambient fabrication of PSCs at a high relative humidity of 55 ± 5% is reported. In‐depth time‐resolved UV–vis spectrometry is carried out to investigate the impact of solvent removal and crystallization rate, which are critical factors influencing the crystallization kinetics and morphology because of adventitious moisture. UV–vis spectrometry enables accurate determination of the thickness of the wet precursor film. Anti‐solvent‐free, high‐humidity ambient coatings of hysteresis‐free PSCs with PCEs of 21.1% and 18.0% are demonstrated for 0.06 and 1 cm2 devices, respectively. These PSCs exhibit comparable stability to those fabricated in a glovebox, thus demonstrating their high potential. In this work, a perovskite solar cell (PSC) is fabricated via a scalable solution process under ambient conditions. A hysteresis‐free, high‐efficiency (21.1%), laminar‐air‐knife‐assisted meniscus coating of PSCs is demonstrated at room temperature and a relative humidity of 55%. An in‐depth in situ investigation by time‐resolved UV–vis spectroscopy is conduced to explore the nucleation dynamics.
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DOI：
10.1002/advs.202003359
发表时间：
2021-03
期刊：
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子：
--
作者：
Fong PW;Hu H;Ren Z;Liu K;Cui L;Bi T;Liang Q;Wu Z;Hao J;Li G
通讯作者：
Li G
影响因子：
19
作者：
Hu, Hanlin;Ren, Zhiwei;Li, Gang
通讯作者：
Li, Gang
影响因子：
6.7
作者：
Gangishetty, Mahesh K.;Scott, Robert W. J.;Kelly, Timothy L.
通讯作者：
Kelly, Timothy L.
影响因子：
4.5
作者：
Guo, Xin;McCleese, Christopher;Burda, Clemens
通讯作者：
Burda, Clemens
影响因子：
16.6
作者：
Bai Y;Dong Q;Shao Y;Deng Y;Wang Q;Shen L;Wang D;Wei W;Huang J
通讯作者：
Huang J