Electroluminescence and photoluminescence characterization of multijunction solar cells
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SubjectElectroluminescence (EL); Photoluminescence; Sheet resistance; Shunt characterization; Simulation program with integrated circuit emphasis (SPICE); Multijunction solar cell
A combined electroluminescence and photoluminescence setup for a fast, nondestructive, and high-resolution characterization of large-area lattice matched GaInP /Ga(In)As/Ge triple-junction space solar cells was developed. In contrast with electroluminescence, where coupling effects between the subcells appear, all subcells can be analyzed independently in photoluminescence imaging, using three monochromatic light sources. This will be demonstrated by way of example for a partly irradiated cell. Alternatively, electroluminescence combined with simulation program with integrated circuit emphasis network simulations constitutes a powerful tool to extract quantitative information despite the coupling effects. Sheet resistances and shunts in individual subcells can be accurately modeled with this method. © 2012 IEEE.
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Nesswetter H; Lugli P; Bett A; Zimmermann C (2013)A combined electroluminescence and photoluminescence setup for a fast, nondestructive, and high-resolution characterization of large-area lattice matched GaInP/Ga(In)As/Ge triple-junction space solar cells was developed. ...
Rutzinger M; Salzberger M; Nesswetter H; Lackner D; Bett A; Lugli P; Zimmermann C (IEEE Electron Devices Society, 2017)The photocurrent versus open-circuit voltage characteristic of individual subcells in a multijunction solar cell can be measured by illuminating the subcell with a pulse sequence of spatially homogeneous laser light. In ...
Rutzinger M; Salzberger M; Gerhard A; Nesswetter H; Lugli P; Zimmermann C (American Institute of Physics Inc., 2017)A method for measuring subcell capacitance voltage (C-V) in a multijunction solar cell is introduced. The subcell of interest is illuminated by a monochromatic light pulse with a ns rise time. The subcell capacitance is ...