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research article
Complex Refractive Indices of Cesium–Formamidinium-Based Mixed-Halide Perovskites with Optical Band Gaps from 1.5 to 1.8 eV
February 26, 2018
Cesium-formamidinium-based mixed-halide perovskite materials with optical band gaps ranging from 1.5 to 1.8 eV are investigated by variable-angle spectroscopic ellipsometry. The determined complex refractive indices are shown to depend on the fabrication procedure and environmental conditions during processing. This data is complemented by additional optical and structural characterization, as well as the demonstration of efficient perovskite solar cells. Finally, the data is used in optical simulations to provide guidelines for the optimization of perovskite/silicon tandem solar cells.
Type
research article
Authors
•
Nogay, Gizem
•
Sahli, Florent
•
Yang, Terry Chien-Jen
•
•
Christmann, Gabriel
•
Walter, Arnaud
•
Kamino, Brett A.
•
Fiala, Peter
•
Löper, Philipp
Publication date
2018-02-26
Published in
Volume
3
Issue
3
Start page
742
End page
747
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
May 17, 2018
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