原子层沉积
材料科学
能量转换效率
有机太阳能电池
图层(电子)
纳米技术
沉积(地质)
光电子学
光伏系统
氧化锡
薄膜
兴奋剂
复合材料
电气工程
古生物学
沉积物
生物
聚合物
工程类
作者
Lorenzo Di Mario,David Garcia Romero,Han Wang,Eelco K. Tekelenburg,Sander Meems,T. Zaharia,Giuseppe Portale,Maria Antonietta Loi
标识
DOI:10.1002/adma.202301404
摘要
Transport layers are of outmost importance for thin-film solar cells, determining not only their efficiency but also their stability. To bring one of these thin-film technologies toward mass production, many factors besides efficiency and stability become important, including the ease of deposition in a scalable manner and the cost of the different material's layers. Herein, highly efficient organic solar cells (OSCs), in the inverted structure (n-i-p), are demonstrated by using as electron transport layer (ETL) tin oxide (SnO2 ) deposited by atomic layer deposition (ALD). ALD is an industrial grade technique which can be applied at the wafer level and also in a roll-to-roll configuration. A champion power conversion efficiency (PCE) of 17.26% and a record fill factor (FF) of 79% are shown by PM6:L8-BO OSCs when using ALD-SnO2 as ETL. These devices outperform solar cells with SnO2 nanoparticles casted from solution (PCE 16.03%, FF 74%) and also those utilizing the more common sol-gel ZnO (PCE 16.84%, FF 77%). The outstanding results are attributed to a reduced charge carrier recombination at the interface between the ALD-SnO2 film and the active layer. Furthermore, a higher stability under illumination is demonstrated for the devices with ALD-SnO2 in comparison with those utilizing ZnO.
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