Figure 6
From: Large area Germanium Tin nanometer optical film coatings on highly flexible aluminum substrates
(a) Refection spectra (from 400 to 2400 nm in wavelength) of Al foil coated with 10, 20, 30, 40, 50, 60, 100 and 180 nm of GeSn thin films. (b) Refection spectra (from 5 to 18 μm in wavelength) of Al foil coated with various thickness of GeSn thin films.
