Crystallisation control of drop-cast quasi-2D/3D perovskite layers for efficient solar cells
AuthorZuo, C; Scully, AD; Tan, WL; Zheng, F; Ghiggino, KP; Vak, D; Weerasinghe, H; McNeill, CR; Angmo, D; Chesman, ASR; ...
Source TitleCOMMUNICATIONS MATERIALS
University of Melbourne Author/sGhiggino, Kenneth
AffiliationSchool of Chemistry
Document TypeJournal Article
CitationsZuo, C., Scully, A. D., Tan, W. L., Zheng, F., Ghiggino, K. P., Vak, D., Weerasinghe, H., McNeill, C. R., Angmo, D., Chesman, A. S. R. & Gao, M. (2020). Crystallisation control of drop-cast quasi-2D/3D perovskite layers for efficient solar cells. COMMUNICATIONS MATERIALS, 1 (1), https://doi.org/10.1038/s43246-020-0036-z.
Access StatusOpen Access
ARC Grant codeARC/CE170100026
<jats:title>Abstract</jats:title><jats:p>Introducing layered quasi-2D perovskite phases into a conventional 3D perovskite light-absorbing matrix is a promising strategy for overcoming the limited environmental stability of 3D perovskite solar cells. Here, we present a simple drop-casting method for preparing hybrid perovskite films comprising both quasi-2D and quasi-3D phases, formed using phenylethylammonium or iso-butylammonium as spacer cations. The film morphology, phase purity, and crystal orientation of the hybrid quasi-2D/3D perovskite films are improved significantly by applying a simple N<jats:sub>2</jats:sub> blow-drying step, together with inclusion of methylammonium chloride as an additive. An enhanced power conversion efficiency of 16.0% is achieved using an iso-butylammonium-based quasi-2D/3D perovskite layer which, to our knowledge, is the highest recorded to date for a quasi-2D/3D perovskite solar cells containing a non-spin-cast perovskite layer prepared under ambient laboratory conditions.</jats:p>
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