Self-consistent optical parameters of intrinsic silicon at 300 K including temperature coefficients

An updated tabulation is presented of the optical properties of intrinsic silicon, of particular interest in solar cell calculations. Improved values of absorption coefficient, refractive index and extinction coefficient at 300 K are tabulated over the 0.25–1.45 μm wavelength range at 0.01 μm intervals. The self-consistent tabulation was derived from Kramers–Kronig analysis of updated reflectance data deduced from the literature. The inclusion of normalised temperature coefficients allows extrapolation over a wide temperature range, with accuracy similar to that of available experimental data demonstrated over the −24 °C to 200 °C range.