Scalable perovskite/CIGS thin-film solar module with power conversion efficiency of 17.8%Electronic supplementary information (ESI) available. See DOI: 10.1039/c7ta01651d

All-thin film perovskite/CIGS multijunction solar modules, combining a semi-transparent perovskite top solar module stacked on a CIGS bottom solar module, are a promising route to surpass the efficiency limits of single-junction thin-film solar modules. In this work, we present a scalable thin-film...

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Main Authors: Paetzold, U. W, Jaysankar, M, Gehlhaar, R, Ahlswede, E, Paetel, S, Qiu, W, Bastos, J, Rakocevic, L, Richards, B. S, Aernouts, T, Powalla, M, Poortmans, J
Format: Article
Language:English
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Summary:All-thin film perovskite/CIGS multijunction solar modules, combining a semi-transparent perovskite top solar module stacked on a CIGS bottom solar module, are a promising route to surpass the efficiency limits of single-junction thin-film solar modules. In this work, we present a scalable thin-film perovskite/CIGS photovoltaic module with an area of 3.76 cm 2 and a power conversion efficiency of 17.8%. Our prototype outperforms both the record single-junction perovskite solar module of the same area as well as the reference CIGS solar module. The presented perovskite/CIGS thin-film multijunction solar module makes use of the "4-terminal architecture", which stacks the perovskite solar module in superstrate configuration on top of the CIGS solar module in substrate configuration. Both submodules apply a scalable interconnection scheme that can accommodate scale-up towards square meter scale thin-film multijunction solar modules. In order to identify the future potential of the presented stacked perovskite/CIGS thin-film solar module, we quantify the various losses in the presented prototype and identify the key challenges of this technology towards very high power conversion efficiencies. All-thin film perovskite/CIGS multijunction solar modules, combining a semi-transparent perovskite top solar module stacked on a CIGS bottom solar module, are a promising route to surpass the efficiency limits of single-junction thin-film solar modules.
ISSN:2050-7488
2050-7496
DOI:10.1039/c7ta01651d