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- W1985399845 abstract "Current losses at surfaces play a crucial role in the optimization of high-efficiency silicon solar cells. We present a new approach to characterize the surface recombination activity of interdigitated-back-contact (IBC) silicon solar cells by comparing experimental and simulated photoluminescence images (PL). The different recombination properties of the p- and n-doped regions of IBC cells in combination with the operating condition lead to contrast profiles in the PL image that vary with bias voltage. We achieve a good matching of experimental and simulated data for the investigated cells enabling the analysis of how sensitive the simulated contrast patterns are to changes in the surface recombination at the emitter, back- and front-surface-field and if a better matching of the experimental PL images is possible. Using these PL images in combination with simulations around the open circuit voltage Voc the determination of surface recombination velocities S and emitter saturation currents J0 on finished cells is made possible for the first time. This approach also opens a new path towards loss analysis of finished PERL, PERC, MWT and other silicon solar cells." @default.
- W1985399845 created "2016-06-24" @default.
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- W1985399845 date "2014-01-01" @default.
- W1985399845 modified "2023-10-16" @default.
- W1985399845 title "Surface recombination parameters of interdigitated-back-contact silicon solar cells obtained by modeling luminescence images" @default.
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- W1985399845 doi "https://doi.org/10.1016/j.solmat.2013.05.050" @default.
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