Figure 2.

Absorption coefficient spectra and Tauc plots and relative linear fits. (a) Transmittance and reflectance spectra of 5-nm a-Ge QW (inset). Absorption coefficient of a-Ge QW of different thicknesses together with the spectrum of a bulk-like 125-nm a-Ge. (b) Tauc plots (symbols) and relative linear fits according to the reported Tauc law (lines).

Cosentino et al. Nanoscale Research Letters 2013 8:128   doi:10.1186/1556-276X-8-128
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