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

Figure 5.

Figure 5

Ψ (left) and Δ (right) spectra of ZnO (a, b), Au NPs/2 at. % AZO (c, d), and Au NPs/4 at. % AZO (e, f) films, with and without Au NPs on top, acquired with incidence angle of 65°. In all spectra, the red markers represent the data of the Au NPs–TCO system. Three lines were placed on the Ψ spectra to point out the peak, related to LSPR of Au NPs. The solid line was set at the peak of ZnO spectrum while the dashed lines indicate the peaks of Au NPs/2 at. % AZO (black dashed line) and Au NPs/4 at. % AZO (purple dashed line) spectra. (g) Ψ spectra of Au NPs/2 at. % AZO (squares) and Au NPs/4 at. % AZO (circles) films, acquired with incidence angle of 65°. Inset in (c): a representative scheme of the samples under study (Au NPs/AZO film/MgO substrate one side polished). (h) A representative scheme of the model used for the fit of the experimental ellipsometry data.