Photoluminescence assessment of materials for solar cell absorbers

Author:

Siebentritt Susanne1ORCID,Rau Uwe2,Gharabeiki Sevan1,Weiss Thomas P.1,Prot Aubin1,Wang Taowen1,Adeleye Damilola1,Drahem Marwan1,Singh Ajay1ORCID

Affiliation:

1. Department of Physics and Materials Science, University of Luxembourg, 4422 Belvaux, Luxembourg

2. IEK5-Photovoltaik, Forschungszentrum Jülich, 52425 Jülich, Germany

Abstract

Photoluminescence is used to predict the open circuit voltage. However, band gap fluctuations and tail states broaden the PL emission and can lead to underestimation of the quasi Fermi level splitting. We discuss potential errors and how to avoid them.

Funder

Fonds National de la Recherche Luxembourg

Publisher

Royal Society of Chemistry (RSC)

Subject

Physical and Theoretical Chemistry

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