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1 October 2023 Vacuum processing of perovskite films and solar cells
Michele Sessolo
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Proceedings Volume PC12660, Organic, Hybrid, and Perovskite Photovoltaics XXIV; PC1266006 (2023) https://doi.org/10.1117/12.2676711
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States
Abstract
The most stable and efficient perovskite solar cells reported so far, have mostly been prepared by solution-processing. This is due in part to the technical difficulties associated with the vacuum deposition from individual thermal sources. Here we present multi-component materials obtained by using multiple sources (up to 4) thermal vacuum deposition. Different stoichiometries are evaluated, varying the A-site cations, as well as mixed halide systems. Both narrow bandgap and wide bandgap materials will be presented, with bandgap spanning from 1.5 to 1.8 eV. We highlight the importance of the control over the film morphology and composition, which differs substantially when these compounds are vacuum processed. We identify thermally stable compositions and apply them to opaque and bifacial perovskite solar cells. Avenues to improve the material stability and to maximize the open circuit voltage using additives and/or novel charge transport layers will also be discussed.
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Michele Sessolo "Vacuum processing of perovskite films and solar cells", Proc. SPIE PC12660, Organic, Hybrid, and Perovskite Photovoltaics XXIV, PC1266006 (1 October 2023); https://doi.org/10.1117/12.2676711
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KEYWORDS
Perovskite
Solar cells
Vacuum
Chemical composition
Vacuum deposition
Opacity
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