Modeling and realization of photonic structures for silicon-based tandem solar cells

Oliver Höhn; Hubert Hauser; Nico Tucher; Ralph Müller; Benedikt Bläsi

doi:10.1117/12.2551034

3 March 2020 Modeling and realization of photonic structures for silicon-based tandem solar cells

Oliver Höhn, Hubert Hauser, Nico Tucher, Ralph Müller, Benedikt Bläsi

Proceedings Volume 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX; 1127502 (2020) https://doi.org/10.1117/12.2551034
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Different photonic light trapping structures realized by a combination of interference- and nanoimprint-lithography as well as based on self-organization processes are presented. Their potential as rear side light trapping structures for silicon based tandem solar cells is evaluated based on the comparison of EQE measurements and optical modeling. The photonic structure used in the current world record III-V silicon tandem solar cell is a metallic crossed grating with 1μm period. This structure is shown in detail and acts as benchmark for the comparison of the concepts. Finally, the requirements for a successful implementation of photonic structures in highest efficiency solar cells are shown.

Citation Download Citation

Oliver Höhn, Hubert Hauser, Nico Tucher, Ralph Müller, and Benedikt Bläsi "Modeling and realization of photonic structures for silicon-based tandem solar cells", Proc. SPIE 11275, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, 1127502 (3 March 2020); https://doi.org/10.1117/12.2551034

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KEYWORDS

Silicon

Solar cells

Silver

External quantum efficiency

Etching

Tandem solar cells

Nanoimprint lithography

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