文章基本信息

标题：Generic water-based spray-assisted growth for scalable high-efficiency carbon-electrode all-inorganic perovskite solar cells
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作者：Zeyang Zhang ; Yanshuang Ba ; Dandan Chen 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：11
页码：1-15
DOI：10.1016/j.isci.2021.103365
语种：English
出版社：Elsevier
摘要：SummaryA water-based spray-assisted growth strategy is proposed to prepare large-area all-inorganic perovskite films for perovskite solar cells (PSCs), which involves in spraying of cesium halide water solution onto spin-coating-deposited lead halide films, followed by thermal annealing. With CsPbBr3as an example, we show that as-proposed growth strategy can enable the films with uniform surface, full coverage, pure phase, large grains, and high crystallinity, which primarily benefits from the controllable CsBr loading quantity, and the use of water as CsBr solvent makes the reaction between CsBr and PbBr2immune to PbBr2film microstructure. As a result, the small-area (0.09 cm2) and large-area (1.00 cm2) carbon-electrode CsPbBr3PSCs yield the record-high efficiencies of 10.22% and 8.21%, respectively, coupled with excellent operational stability. We also illustrate that the water-based spray-assisted deposition strategy is suitable to prepare CsPbCl3, CsPbIBr2, and CsPbI2Br films with outstanding efficiencies of 1.27%, 10.44%, and 13.30%, respectively, for carbon-electrode PSCs.Graphical abstractDisplay OmittedHighlights•Water-based spray-assisted growth is proposed for all-inorganic perovskite films•Water solvent makes perovskite films immune to microstructure of lead halide films•Record-high PCE of 10.22% is achieved for carbon-electrode CsPbBr3PSC•High PCEs are also attained for carbon-electrode CsPbCl3, CsPbIBr2, and CsPbI2Br PSCsEngineering; Materials application; Devices