An analytical model is used to describe the elctrical characteristics of a dual-junction tandem solar cell performing a conversion efficiency of 32.56% under air mass 1.5 global (AM1.5G) spectrum. The tandem structure consists of a thin heterojunction top cell made of indium gallium phosphide (InGaP) on gallium arsenide (GaAs), mechanically stacked on a relatively thick germanium (Ge) substrate which acts as bottom cell. In order to obtain the best performance of such a structure, we simulate for both the upper and lower sub-cell the current density-voltage, power density-voltage, and spectral response behaviours taking into account the doping-dependent transport parameters and a wide range of minority carrier surface recombination velocities.
Analytical modeling of dual-junction tandem solar cells based on an InGaP/GaAs heterojunction stacked on a Ge substrate / Bouzid, F.; Pezzimenti, F.; Dehimi, L.; Della Corte, F. G.; Hadjab, M.; Hadj Larbi, A.. - In: JOURNAL OF ELECTRONIC MATERIALS. - ISSN 0361-5235. - 48:6(2019), pp. 4107-4116. [10.1007/s11664-019-07180-z]
Analytical modeling of dual-junction tandem solar cells based on an InGaP/GaAs heterojunction stacked on a Ge substrate
F. PEZZIMENTIMembro del Collaboration Group
;F. G. Della CorteMembro del Collaboration Group
;
2019-01-01
Abstract
An analytical model is used to describe the elctrical characteristics of a dual-junction tandem solar cell performing a conversion efficiency of 32.56% under air mass 1.5 global (AM1.5G) spectrum. The tandem structure consists of a thin heterojunction top cell made of indium gallium phosphide (InGaP) on gallium arsenide (GaAs), mechanically stacked on a relatively thick germanium (Ge) substrate which acts as bottom cell. In order to obtain the best performance of such a structure, we simulate for both the upper and lower sub-cell the current density-voltage, power density-voltage, and spectral response behaviours taking into account the doping-dependent transport parameters and a wide range of minority carrier surface recombination velocities.File | Dimensione | Formato | |
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