Journal article
Gas-assisted preparation of lead iodide perovskite films consisting of a monolayer of single crystalline grains for high efficiency planar solar cells
F Huang, Y Dkhissi, W Huang, M Xiao, I Benesperi, S Rubanov, Y Zhu, X Lin, L Jiang, Y Zhou, A Gray-Weale, J Etheridge, CR McNeill, RA Caruso, U Bach, L Spiccia, YB Cheng
Nano Energy | Published : 2014
Abstract
The simple planar configuration of organic-inorganic hybrid perovskite solar cells produced by a solution coating process has great potential to be a low-cost and high efficiency photovoltaic technology. However planar perovskite films produced by "normal" spin coating usually show a dendritic grain morphology giving many gaps in the film, resulting in poor coverage of the substrate and thus a low power conversion efficiency. Here a facile gas-assisted solution processing technique is reported that has changed the kinetics of nucleation and crystal growth of the perovskite during the spin coating, producing very uniform perovskite thin films consisting of densely packed single crystalline gr..
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Awarded by Australian Research Council
Funding Acknowledgements
The authors acknowledge the Australian Centre for Advanced Photovoltaics, the Australian Renewable Energy Agency and the Victorian State Government (DBI-VSA and DPI-ETIS) for financial support. Monash University Centre for Electron Microscopy (MCEM) and the Advanced Microscopy Facility at The University of Melbourne are acknowledged for electron microscopy facilities. The Commonwealth Scientific and Industrial Research Organization is acknowledged for providing support through OCE Science Leader positions (UB and RAC). RAC acknowledges the Australian Research Council for a Future Fellowship (FT0990583) and the Melbourne Research Grant Support Scheme. YZ was supported by the Australian Research Council (ARC) Grant (DP110104734) and the Tecnai G2 F20 TEM at the MCEM was funded by ARC, Australia Grant LE110100223.