Capacitance-Voltage Characterization Technique Adapted to Tandem Solar Cell - CentraleSupélec Access content directly
Conference Papers Year : 2019

Capacitance-Voltage Characterization Technique Adapted to Tandem Solar Cell

Nicolas Moron


This paper presents a simple and non-destructive method to determine doping densities and built-in potential of subcells by adapting the well-known capacitance-voltage (C-V) technique to two-terminal (2T) tandem solar cells. Because of the electrical coupling between the two subcells in a monolithic 2T tandem solar cell the standard method using a Mott-Schottky plot (1/C 2 vs. V) cannot be applied. Using numerical modeling, it is demonstrated that, by under chosen illumination conditions where only one subcell can absorb the light, it is possible to explore the bias dependence of the capacitance and to extract the parameters of the other subcell if the appropriate frequency conditions are present. This method is experimentally applied to an AlGaAs/Si tandem cell and parameters of both AlGaAs and Si cells are extracted. Finally, the validity of that method is assessed by the very good agreement obtained when comparing the values extracted from our measurements on the tandem cell to those extracted from measurements on isotype cells and to the values targeted during the fabrication process of the AlGaAs/Si tandem solar cell.
Fichier principal
Vignette du fichier
3CO.8.3_paper (1).pdf (5.14 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

hal-02343918 , version 1 (20-03-2020)



Cyril Léon, Sylvain Le Gall, Marie-Estelle Gueunier-Farret, Aurore Brézard-Oudot, Alexandre Jaffré, et al.. Capacitance-Voltage Characterization Technique Adapted to Tandem Solar Cell. 36th European Photovoltaic Solar Energy Conference and Exhibition, WIP, Sep 2019, Marseille, France. pp.638, ⟨10.4229/EUPVSEC20192019-3CO.8.3⟩. ⟨hal-02343918⟩
219 View
538 Download



Gmail Mastodon Facebook X LinkedIn More