来自纽约大学、北京大学、中国电子科技大学、耶鲁大学和约翰霍普金斯大学的一组研究人员声称，通过喷射涂层技术，他们已经解决了钙钛矿太阳能电池商业化生产上的重大挑战。科学家们表示，喷射涂层可以将电子传输层（ETL）均匀地遍布于大面积材料，适用于制造大型太阳能电池板，并能确保更高的性能。
在发表于化学权威杂志《纳米化学》上的一篇文章中，研究小组称喷射涂层相较其他方法可将ETL效率提高至30%，从而使功率转换效率从13%跃升至17%，且能减少缺陷。
商业性运用钙钛矿的挑战性，部分原因是因为难以有效地在钙钛矿的结晶表面上涂抹均匀的ETL层。这些研究人员选择了PCBM化合物(一种富勒烯衍生物，分子式为[6,6]-phenyl-C61-butyric acid methyl ester)，以确保更好的导电性，且使界面接触不易穿透，光陷阱增强。
来自纽约大学坦顿工程学院的化学和生物分子工程系副教授Andre D. Taylor表示，他们所使用的方法“简洁、重复性强、可扩展性强”，这表明PCBM ETL的喷涂对提高钙钛矿太阳能电池的效率基线具有广泛的吸引力，并为将来p-i-n钙钛矿太阳能电池打破效率记录提供了一个理想的平台。
本文作者： MARIJA DJORDJEVIC
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