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ECN publication
Perovskite/Crystalline silicon tandems: impact of Perovskite band gap and crystalline silicon cell architecture
Published by: Publication date:
ECN Solar Energy 25-9-2017
ECN report number: Document type:
ECN-M--17-035 Conference Paper
Number of pages: Full text:
5 Download PDF  

Presented at: EUPVSEC, Amsterdam, , 25-29 september 2017.

The combination of a semi-transparent, wide band gap perovskite solar cell (ST PSC) with a crystalline silicon (c-Si) bottom cell in a tandem configuration is considered a promising approach to enhance solar cell efficiencies over the current single junction c-Si cell efficiencies. In this study, we use a simple model based on experimental EQEs and IV-parameters, to predict the 4-terminal tandem efficiency of advanced industrial c-Si cells of different architectures, combined with an experimental 15% ST PSC with a 1.55eV band gap. In addition, we use this model to study the expected effect of the variation of the band gap of the perovskite absorber on the 4-terminal efficiency which results in a positive outlook towards > 25% tandem efficiencies. Furthermore, we demonstrate an experimental 4-terminal tandem efficiency of 24.1% with a MWT-HIT bottom cell.

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