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Green Anti‐Solvent Processed Planar Perovskite Solar Cells with Efficiency Beyond 19%
Solar RRL ( IF 6.0 ) Pub Date : 2018-01-18 , DOI: 10.1002/solr.201700213
Min Zhang 1 , Zenghua Wang 1 , Bin Zhou 1 , Xuguang Jia 2 , Qingshan Ma 1 , Ningyi Yuan 2 , Xiaojia Zheng 1 , Jianning Ding 2 , Wen‐Hua Zhang 1
Solar RRL ( IF 6.0 ) Pub Date : 2018-01-18 , DOI: 10.1002/solr.201700213
Min Zhang 1 , Zenghua Wang 1 , Bin Zhou 1 , Xuguang Jia 2 , Qingshan Ma 1 , Ningyi Yuan 2 , Xiaojia Zheng 1 , Jianning Ding 2 , Wen‐Hua Zhang 1
Affiliation
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Anti‐solvent assisted crystallization (ASAC) is currently one of the most widely used methods to obtain perovskite films with great quality due to its advantage of low cost and easy operation. The commonly used anti‐solvents, toluene, and chlorobenzene (CB), are well recognized to be contaminants in drinking water and exhibit high toxicity levels. It is desirable to develop environmentally benign solvents for the fabrication of perovskite solar cells by ASAC method. As a green solvent, methoxybenzene (PhOMe) has the advantages of low toxicity, moderate saturated vapor pressure, and similar solvent features with toluene and CB. Here, we report highly efficient planar perovskite solar cells (PSCs) prepared by ASAC method using PhOMe green anti‐solvent, achieving a power conversion efficiency (PCE) of 19.42%, which is better than CB processed PSCs (19.09%). Compared to CB processed perovskite films, perovskites produced by PhOMe exhibit smoother surfaces, larger grains, and lower carrier recombination rates, while the crystallization and absorption features remain basically unchanged. These results demonstrate that PhOMe is an excellent anti‐solvent alternative for high‐quality perovskites and thus provide new opportunities for environmental‐friendly manufacturing of PSCs and other optoelectronic devices.
中文翻译：
绿色抗溶剂处理平面钙钛矿太阳能电池，效率超过19％
反溶剂辅助结晶（ASAC）由于其低成本和易于操作的优点，是目前获得高质量钙钛矿薄膜的最广泛使用的方法之一。众所周知，常用的抗溶剂，甲苯和氯苯（CB）是饮用水中的污染物，并显示出高毒性水平。希望开发出对环境无害的溶剂，以用于通过ASAC方法制造钙钛矿太阳能电池。作为绿色溶剂，甲氧基苯（PhOMe）具有毒性低，饱和蒸气压适中以及与甲苯和CB具有相似溶剂特性的优点。在这里，我们报道了使用PhOMe绿色反溶剂通过ASAC方法制备的高效平面钙钛矿太阳能电池（PSC），其功率转换效率（PCE）为19.42％，这比经过CB处理的PSC（19.09％）更好。与CB处理的钙钛矿薄膜相比，PhOMe生产的钙钛矿表现出更光滑的表面，更大的晶粒和更低的载流子复合率，而结晶和吸收特性却基本保持不变。这些结果表明，PhOMe是优质钙钛矿的优良抗溶剂替代品，从而为环保生产PSC和其他光电器件提供了新的机会。
更新日期：2018-01-18
中文翻译：
绿色抗溶剂处理平面钙钛矿太阳能电池，效率超过19％
反溶剂辅助结晶（ASAC）由于其低成本和易于操作的优点，是目前获得高质量钙钛矿薄膜的最广泛使用的方法之一。众所周知，常用的抗溶剂，甲苯和氯苯（CB）是饮用水中的污染物，并显示出高毒性水平。希望开发出对环境无害的溶剂，以用于通过ASAC方法制造钙钛矿太阳能电池。作为绿色溶剂，甲氧基苯（PhOMe）具有毒性低，饱和蒸气压适中以及与甲苯和CB具有相似溶剂特性的优点。在这里，我们报道了使用PhOMe绿色反溶剂通过ASAC方法制备的高效平面钙钛矿太阳能电池（PSC），其功率转换效率（PCE）为19.42％，这比经过CB处理的PSC（19.09％）更好。与CB处理的钙钛矿薄膜相比，PhOMe生产的钙钛矿表现出更光滑的表面，更大的晶粒和更低的载流子复合率，而结晶和吸收特性却基本保持不变。这些结果表明，PhOMe是优质钙钛矿的优良抗溶剂替代品，从而为环保生产PSC和其他光电器件提供了新的机会。
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