基于具有高覆盖率和改善聚集性的卤化锡钙钛矿薄膜的无铅太阳能电池。
Lead-Free Solar Cells based on Tin Halide Perovskite Films with High Coverage and Improved Aggregation.
作者信息
Liu Jiewei, Ozaki Masashi, Yakumaru Shinya, Handa Taketo, Nishikubo Ryosuke, Kanemitsu Yoshihiko, Saeki Akinori, Murata Yasujiro, Murdey Richard, Wakamiya Atsushi
机构信息
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
出版信息
Angew Chem Int Ed Engl. 2018 Oct 1;57(40):13221-13225. doi: 10.1002/anie.201808385. Epub 2018 Sep 5.
Two simple methods to improve tin halide perovskite film structure are introduced, aimed at increasing the power conversion efficiency of lead free perovskite solar cells. First, a hot antisolvent treatment (HAT) was found to increase the film coverage and prevent electrical shunting in the photovoltaic device. Second, it was discovered that annealing under a low partial pressure of dimethyl sulfoxide vapor increased the average crystallite size. The topographical and electrical qualities of the perovskite films are substantively improved as a result of the combined treatments, facilitating the fabrication of tin-based perovskite solar cell devices with power conversion efficiencies of over 7 %.
介绍了两种改善卤化锡钙钛矿薄膜结构的简单方法，旨在提高无铅钙钛矿太阳能电池的功率转换效率。首先，发现热反溶剂处理（HAT）可增加薄膜覆盖率并防止光伏器件中的电分流。其次，发现二甲亚砜蒸汽在低分压下退火可增加平均微晶尺寸。联合处理使钙钛矿薄膜的形貌和电学质量得到实质性改善，有助于制造功率转换效率超过7%的锡基钙钛矿太阳能电池器件。
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