Crystallisation control of drop-cast quasi-2D/3D perovskite layers for efficient solar cells
Chuantian Zuo, Andrew D Scully, Wen Liang Tan, Fei Zheng, Kenneth P Ghiggino, Doojin Vak, Hasitha Weerasinghe, Christopher R McNeill, Dechan Angmo, Anthony SR Chesman, Mei Gao
COMMUNICATIONS MATERIALS | SPRINGERNATURE | Published : 2020
AbstractIntroducing 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 N2 blow-drying step, together with inclusion of methylammonium chloride as an additive. An enhanced power conversion efficiency of..View full abstract
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Awarded by ARC Centre of Excellence in Exciton Science
The authors acknowledge support from the Australian Centre for Advanced Photovoltaics (ACAP) program funded by the Australian Government through the Australian Renewable Energy Agency (ARENA), the Industrial Innovation Program of CSIRO Manufacturing. The authors also acknowledge Dr. Aaron Seeber of CSIRO for XRD measurements. Part of this work was conducted on the SAXS/WAXS beamline at the Australian Synchrotron, part of ANSTO. Funding support (to F.Z. and K.P.G.) from the ARC Centre of Excellence in Exciton Science (CE170100026) is acknowledged.