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Effects of Au layer thickness and number of bilayers on the properties of Au/ZnO multilayers
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Image of FIG. 1.
FIG. 1.

(Color online) RBS spectra for the as-prepared Au/ZnO samples.

Image of FIG. 2.
FIG. 2.

(Color online) (a) X-Ray reflectometry for as deposited multilayers; (b) X-Ray reflectometry for annealed multilayers.

Image of FIG. 3.
FIG. 3.

TEM cross-section view for (a) ZnO[Au(3.6)/ZnO]20 and (b), (c), and (d) ZnO[Au(1.8)/ZnO]75.

Image of FIG. 4.
FIG. 4.

(Color online) Horizontal cuts of GISAXS patterns for ZnO[Au(2.4)/ZnO]40 (open square) and ZnO[Au(1.8)/ZnO]75 (black dots).

Image of FIG. 5.
FIG. 5.

(Color online) (a) X-ray diffractograms for as prepared samples and a ZnO film; note the different vertical scales: log. scale for ZnO[Au(t)/ZnO] n on the left vertical axis, linear scale for ZnO on the right vertical axis; (b) X-ray diffractogram fit for ZnO[Au(7.8)/ZnO]5; (c) Integrated intensity of the Au(111) Bragg peak versus the total Au thickness; and (d) X-ray diffractogram for annealed ZnO[Au(1.8)/ZnO]75.

Image of FIG. 6.
FIG. 6.

(Color online) Experimental and fitted IR spectra for pure ZnO and for as prepared and annealed ZnO[Au(3.6)/ZnO]20 and ZnO[Au(1.8)/ZnO]75.

Image of FIG. 7.
FIG. 7.

(Color online) (a) Optical responses for ZnO[Au(3.6)/ZnO]20 and ZnO[Au(1.8)/ZnO]75 as prepared and after annealing, for pure ZnO and fused silica. Inset: absorption for ZnO[Au(1.8)/ZnO]75 in the 250–500 nm range, (b) Tauc plots for pure ZnO and ann.-ZnO[Au(1.8)/ZnO]75.


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Table I.

Characteristics of the prepared ZnO[Au(tAu)/ZnO] samples with the bilayer thickness determined by XRR ( XRR) and by RBS ( RBS), the number of Au atoms per layer, the Au layer thickness, the total number of Zn atoms and the ZnO thickness determined by RBS.

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Table II.

Structural parameters determined from the analysis of the GISAXS data. a

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Table III.

Interpretation of the XRD peaks.

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Table IV.

Parameters for the dielectric functions. a


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of Au layer thickness and number of bilayers on the properties of Au/ZnO multilayers