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. 2022 Jan 25;126(4):1881–1889. doi: 10.1021/acs.jpcc.1c07567

Figure 3.

Figure 3

Ψ (top) and Δ (bottom) spectra of ZnO (triangles), 2 at. % AZO (squares), and 4 at. % AZO (circles) films, grown on MgO substrates, acquired with an incidence angle of 65°. The Ψ spectra above 2.6 eV have been multiplied by a factor of 3 for the sake of clarity. The solid lines in both spectra indicate the plasma frequency for 2 at. % AZO (green) and 4 at. % AZO (blue line). The inset on the top image is a representative scheme of the samples under study (AZO film/MgO substrate, one side polished). The inset on the bottom image is a representative scheme of the model used for the fit of the experimental ellipsometry data.