Uncertainty analysis for the coefficient of band-to-band absorption of crystalline silicon

By C. Schinke, P. C. Peest, Jan Schmidt, R. Brendel, K. Bothe, M. Vogt, I. Kröger, S. Winter, A. Schirmacher, S. Lim and 2 more. 2015

456 citations recorded by the source corpus.

We analyze the uncertainty of the coefficient of band-to-band absorption of crystalline silicon. For this purpose, we determine the absorption coefficient at room temperature (295 K) in the wavelength range from 250 to 1450 nm using four different measurement methods. The data presented in this work derive from spectroscopic ellipsometry, measurements of reflectance and transmittance, spectrally resolved luminescence measurements and spectral responsivity measurements. A systematic measurement uncertainty analysis based on the Guide to the expression of uncertainty in measurement (GUM) as well as an extensive characterization of the measurement setups are carried out for all methods. We determine relative uncertainties of the absorption coefficient of 0.4% at 250 nm, 11% at 600 nm, 1.4% at 1000 nm, 12% at 1200 nm and 180% at 1450 nm. The data are consolidated by intercomparison of results obtained at different institutions and using different measurement approaches.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/501cd7fea5fb25c00b9a95e8133deec04323bf9c

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Citations in the corpus

• A cryogenic silicon interferometer for gravitational-wave detection (2020, background): “Due to the choice of wavelength and power density in the optics, the inter-band and two-photon absorption are found to be unimportant for LIGO Voyager [25, 26].”