Effects of Photon Recycling and Luminescent Coupling in All‐Perovskite Tandem Solar Cells Assessed by Full Opto‐electronic Simulation

Author:

Aeberhard Urs12ORCID,Zeder Simon J.13,Ruhstaller Beat14ORCID

Affiliation:

1. Fluxim AG Katharina‐Sulzer‐Platz 2 Winterthur 8400 Switzerland

2. Integrated Systems Laboratory Department of Information Technology & Electrical Engineering ETH Zürich Winterthur 8400 Switzerland

3. Institute of Electrical and Microengineering (IEM), Photovoltaics and Thin‐Film Electronics Laboratory Ecole Polytechnique Fédérale de Lausanne (EPFL) Neuchâtel 2002 Switzerland

4. Institute of Computational Physics Zurich University of Applied Science ZHAW Winterthur 8401 Switzerland

Abstract

The impact of photon recycling (PR) and of luminescent coupling (LC) on the photovoltaic performance of all‐perovskite tandem solar cells is analyzed by the means of optical and full opto‐electronic device simulation. Optical processes are assessed using a comprehensive Green function formalism that considers wave optical effects also in emission. Starting from a consistent fit of experimental sub‐cell and tandem characteristics, the effects of re‐absorption are propagated from the optical limit to a situation with consideration of realistic charge transport across the entire tandem device. This also provides insight into the origin of performance losses due to sub‐cell and interconnection quality.

Funder

H2020 European Research Council

Publisher

Wiley

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