Abstract
This note draws attention to possible errors when characterizing silicon solar cells by means of the effective minority carrier diffusion length L/sub b/ as defined in the paper on "Numerical modeling of textured silicon solar cells using PC1D" by Basore (1990). The approximations underlying the analytical expression for L/sub eff/ are critically reviewed. Their impact on the determination of the minority carrier bulk diffusion length L/sub b/ from L/sub eff/ is discussed for a 250-/spl mu/m thick Si solar cell. It is found that considerable errors occur in the case of diffusion lengths larger than the cell thickness even when neglecting any measurement uncertainty.
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