Optical constants
Refractive index of Si (Silicon)
Daub 1995: k 0.94–1.42 µm
- Data
- tabulated k
- Range
- 0.941–1.421 µm
- Points
- 71
- Temperature
- 295 K
- State
- crystalline
- Licence
- CC0-1.0
Plot
Click the plot to set the calculator wavelength. Note: the source gives k only; n is not available.
At one wavelength
- Refractive index n
- —
- Extinction coefficient k
- 3.91847e-06
- Permittivity ε1
- —
- Permittivity ε2
- —
- Absorption coefficient α
- 0.424491 cm⁻¹
- Penetration depth δ = λ/(2πk)
- 4.71152e+07 nm
- Abbe number Vd
- —
- Chromatic dispersion dn/dλ
- — µm⁻¹
- Group index ng
- —
- Group velocity dispersion
- — fs²/mm
- Dispersion parameter D
- — ps/(nm·km)
- Photon energy
- 1.06883 eV
ε = (n + ik)², α = 4πk/λ, ng = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.
Use it in Lightsmith
Load this data in Python, simulate in one more line
pip install lightsmith
This dataset has k only, so it cannot be used as a simulation material by itself. Pick a dataset with n from the list above.
Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.
Comments and conditions
Conditions
- temperature
- 295 K
- the source gives k only; n is not available
References
- doi:10.1109/jphotov.2013.2263985 Modeling the Spectral Luminescence Emission of Silicon Solar Cells and Wafers, IEEE Journal of Photovoltaics (2013)
Cite
Carsten Schinke, David Hinken, Jan Schmidt, Karsten Bothe and Rolf Brendel. Modeling the Spectral Luminescence Emission of Silicon Solar Cells and Wafers. IEEE Journal of Photovoltaics, 3, 1038-1052 (2013), doi:10.1109/jphotov.2013.2263985; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)
Data
71 rows as published| λ (µm) | k |
|---|---|
| 0.941 | 0.0012805 |
| 0.948 | 0.0009958 |
| 0.955 | 0.00091196 |
| 0.962 | 0.00080381 |
| 0.969 | 0.00076417 |
| 0.976 | 0.00073474 |
| 0.983 | 0.00067586 |
| 0.99 | 0.00061371 |
| 0.997 | 0.00054664 |
| 1.004 | 0.00047618 |
| 1.011 | 0.00041272 |
| 1.018 | 0.00035401 |
| 1.025 | 0.00029853 |
| 1.032 | 0.00024884 |
| 1.039 | 0.0002034 |
| 1.046 | 0.00016398 |
| 1.053 | 0.00013072 |
| 1.06 | 0.00010207 |
| 1.067 | 8.1343e-05 |
| 1.074 | 6.7091e-05 |
| 1.081 | 5.5571e-05 |
| 1.088 | 4.632e-05 |
| 1.095 | 3.834e-05 |
| 1.102 | 3.1482e-05 |
| 1.109 | 2.6034e-05 |
| 1.116 | 2.1403e-05 |
| 1.123 | 1.7337e-05 |
| 1.13 | 1.3848e-05 |
| 1.134 | 1.2002e-05 |
| 1.137 | 1.0858e-05 |
| 1.141 | 9.2614e-06 |
| 1.148 | 7.0343e-06 |
| 1.155 | 5.0919e-06 |
| 1.162 | 3.4491e-06 |
| 1.169 | 2.1489e-06 |
| 1.176 | 1.0388e-06 |
| 1.183 | 4.3493e-07 |
| 1.19 | 2.6515e-07 |
| 1.197 | 1.8384e-07 |
| 1.204 | 1.2935e-07 |
| 1.211 | 9.049e-08 |
| 1.218 | 6.4358e-08 |
| 1.225 | 4.4744e-08 |
| 1.232 | 3.0098e-08 |
| 1.239 | 1.9029e-08 |
| 1.246 | 1.0907e-08 |
| 1.253 | 5.2547e-09 |
| 1.26 | 2.7273e-09 |
| 1.267 | 1.7443e-09 |
| 1.274 | 1.2166e-09 |
| 1.281 | 8.6444e-10 |
| 1.288 | 6.1497e-10 |
| 1.295 | 4.3694e-10 |
| 1.302 | 3.1083e-10 |
| 1.309 | 2.1667e-10 |
| 1.316 | 1.4766e-10 |
| 1.323 | 9.4648e-11 |
| 1.33 | 5.9693e-11 |
| 1.337 | 3.5749e-11 |
| 1.344 | 2.385e-11 |
| 1.351 | 1.7739e-11 |
| 1.358 | 1.286e-11 |
| 1.365 | 1.0276e-11 |
| 1.372 | 7.0312e-12 |
| 1.379 | 6.3099e-12 |
| 1.386 | 5.0405e-12 |
| 1.393 | 4.5338e-12 |
| 1.4 | 3.4982e-12 |
| 1.407 | 2.5416e-12 |
| 1.414 | 2.2955e-12 |
| 1.421 | 1.6057e-12 |
Band-to-band absorption coefficient. Temperature: 295 K.