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ZnO/Si arrays decorated by Au nanoparticles for surface-enhanced Raman scattering study
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View: Figures


Image of FIG. 1.
FIG. 1.

FE-SEM images of (a) NSPA, (b) ZnO/NSPA, and (c, d) Au NPs grown on the ZnO/NSPA template, (e) TEM image of an individual Au NP-decorated ZnO NW, (f) the schematic diagram of the detailed structure of Au/ZnO/NSPA, (g) FE-SEM image of Au NPs grown on the ZnO NW array/sc-Si template and the inset of the locally magnified FE-SEM image, and (h) XRD pattern of the Au/ZnO/NSPA nanoheterostructure.

Image of FIG. 2.
FIG. 2.

(a) SERS spectra of different concentration R6 G (10−3, 10−4, 10−5, and 10−6 M) adsorbed on the Au/ZnO/NSPA substrate, (b) comparison of the enhanced effect of Au NPs grown on ZnO NW/sc-Si and ZnO/NSPA with 10−4 M R6 G solution.

Image of FIG. 3.
FIG. 3.

(Color online) (a) The Raman mapping viewer (3 µm step size, 20 × 20 = 400) of Au/ZnO/NSPA, which illustrates the measured rectangular region, and here the brightness is proportional to the signal integral intensity centered at 1510 cm−1, and the Raman signal integral intensity measured from the region between two vertical black lines as shown in figure (c), (b) the corresponding sectional views of the two crossed lines within figure (a) (A and B), (c) a series of SERS spectra of 10−5 M R6 G molecules collected on randomly selected 20 places and the corresponding RSD value curve.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: ZnO/Si arrays decorated by Au nanoparticles for surface-enhanced Raman scattering study