Journal
COMMUNICATIONS MATERIALS
Volume 1, Issue 1, Pages -Publisher
SPRINGERNATURE
DOI: 10.1038/s43246-020-0036-z
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Funding
- Australian Centre for Advanced Photovoltaics (ACAP) program - Australian Government through the Australian Renewable Energy Agency (ARENA), Industrial Innovation Program of CSIRO Manufacturing
- ARC Centre of Excellence in Exciton Science [CE170100026]
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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-2 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.
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