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Development of an External Quantum Efficiency Method to Characterize Solar Cells with a Micro Spot: Applied to Micro-Concentrated Systems
P. Voarino, A. Bermudez-Garcia, A. Chehade, R. Couderc
External Quantum Efficiency, Solar Cells, Bended Solar Cells, Micro-Concentration
PV Systems and Storage – Modelling, Design, Operation and Performance
Subtopic: Concentrators and PV for Space Applications
Event: 37th European Photovoltaic Solar Energy Conference and Exhibition
Session: 5BO.15.5
1281 - 1285
ISBN: 3-936338-73-6
Paper DOI: 10.4229/EUPVSEC20202020-5BO.15.5
0,00 EUR
Document(s): paper


The electrical characterization of solar cells is essential to predict the future performance of solar panels in real conditions. Having access to the External Quantum Efficiency (EQE) is also a major asset for understanding the physical phenomena in a photovoltaic device, whether it is made of Silicon, thin films, organic or III-V materials. The development proposed in this paper gives access to the EQE of solar cells in a localized way, using a light spot smaller than 1 mm². This device is useful for several applications (i.e., curved cells, EQE mapping, etc.) avoiding or reducing fingers shadowing. The highlighted application of this method is the characterization of Multi-Junction Solar Cell (MJSC) with a surface lower than 1 mm², typically used in micro-concentrated systems.