Electroluminescence and photoluminescence characterization of multijunction solar cells
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Subjectsimulation program with integrated circuit emphasis (SPICE); shunt characterization; sheet resistance; photoluminescence; Electroluminescence; 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. © 2011-2012 IEEE.
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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 ...
Using variable threshold displacement energy for degradation fitting of particle irradiated multi-junction space solar cells Salzberger M; Nomayr C; Rutzinger M; Lugli P; Zimmermann CG (IEEE, 2016)The degradation of Ga0.5In0.5P/GaAs/Ge triple junction 3G28, 3G30 and isotype 3G28 Ga0.5In0.5P and GaAs cells is analysed and the characteristic degradation curves are determined. The well established displacement damage ...
Nesswetter H; Jost N; Lugli P; Bett A; Zimmermann C (John Wiley and Sons Ltd, 2016)A method for the determination of the subcell I-V characteristics of multijunction solar cells in the presence of optical coupling is presented and applied to a GaInP/GaInAs/Ge triple-junction solar cell. Each of the ...