Complex Refractive Indices of Cesium–Formamidinium-Based Mixed-Halide Perovskites with Optical Band Gaps from 1.5 to 1.8 eV

Jérémie Werner; Gizem Nogay; Florent Sahli; Terry Chien-Jen Yang; Matthias Bräuninger; Gabriel Christmann; Arnaud Walter; Brett A. Kamino; Peter Fiala; Philipp Löper; Sylvain Nicolay; Quentin Jeangros; Bjoern Niesen; Christophe Ballif

doi:10.1021/acsenergylett.8b00089

journal article·2018-03-09Open access

Complex Refractive Indices of Cesium–Formamidinium-Based Mixed-Halide Perovskites with Optical Band Gaps from 1.5 to 1.8 eV

Jérémie Werner, Gizem Nogay, Florent Sahli, Terry Chien-Jen Yang, Matthias Bräuninger, Gabriel Christmann, Arnaud Walter, Brett A. Kamino, Peter Fiala, Philipp Löper, Sylvain Nicolay, Quentin Jeangros, Bjoern Niesen, Christophe Ballif

ACS Energy Letters· Volume 3· Issue 3

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Source abstract

Abstract

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.

Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Solid-state spectroscopy and crystallography · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin-Film Electronics Laboratory, Rue de la Maladière 71b, 2002 Neuchâtel, Switzerland

CSEM, PV-Center, Jaquet-Droz 1, 2002 Neuchâtel, Switzerland

Funding

Bundesamt f?r Energie · Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Nano-Tera

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