Abstract
Perovskite/crystalline silicon tandem solar cells have the potential to reach efficiencies beyond those of silicon single-junction record devices. However, the high-temperature process of 500 °C needed for state-of-the-art mesoscopic perovskite cells has, so far, been limiting their implementation in monolithic tandem devices. Here, we demonstrate the applicability of zinc tin oxide as a recombination layer and show its electrical and optical stability at temperatures up to 500 °C. To prove the concept, we fabricate monolithic tandem cells with mesoscopic top cell with up to 16% efficiency. We then investigate the effect of zinc tin oxide layer thickness variation, showing a strong influence on the optical interference pattern within the tandem device. Finally, we discuss the perspective of mesoscopic perovskite cells for high-efficiency monolithic tandem solar cells. © 2016 Author(s)
Original language | English (US) |
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Pages (from-to) | 233902 |
Journal | Applied Physics Letters |
Volume | 109 |
Issue number | 23 |
DOIs | |
State | Published - Dec 5 2016 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledgements: Swiss Office of Energy[SI/501072-01]