Beilstein J. Nanotechnol.2022,13, 472–490, doi:10.3762/bjnano.13.40
combined with metal nanoparticles, resulting in enhanced photoactivity of Au-decoratedZnO nanocrystals for photoelectrochemical water splitting [9], improved photodetection performance of ZnO nanofibers decorated with Au NPs [10], or enhanced photocatalytic activity of ZnO doped with Au NPs [11]. Moreover
one described above for Au NPs decorated ZnO NRs (Figure 7A).
Besides the UV emission enhancement of ZnO NPs by metal NPs, the presence of metal could also enhance the green emission. The green emission enhancement of Au-decoratedZnO NRs was observed for a higher concentration of Au, which increased
Au NPs. Photoluminescence spectra of ZnO films were studied after doping them with 29% Au annealed at 300 °C in air. After Au incorporation, a strong increase of both UV and visible ZnO emission bands was obtained [94]. Another study [95] obtained 1.5-fold to 2.8-fold enhancements for Au-decorated
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Figure 1:
SEM of hydrothermally grown ZnO nanoparticles (a) and of vertically aligned ZnO nanords (c). UV–vis...
Beilstein J. Nanotechnol.2018,9, 771–779, doi:10.3762/bjnano.9.70
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Keywords: Au-decoratedZnO; carrier dynamics; gas sensors; photocatalyst; SPR effect; Introduction
Inorganic transition metal oxide sensor devices have attracted attention in particular for improving gas sensing, energy conversion, electronics, photocatalysis and optoelectronic devices [1][2][3][4]. Among
response/recovery times. The various origins of these properties are commonly assigned to the following two phenomena: (i) a surface plasmon resonance (SPR) effect of plasmonic gold nanoparticles (Au NPs) could certainly take place and contribute to the electrical transport behavior for Au-decoratedZnO
revealed that ZnO sub-micrometer spheres were deposited on the glass substrates and Au-decoratedZnO nanostructures were confirmed. Using photoluminescence (PL) spectra and time-resolved photoluminescence (TRPL) measurements, we investigate the SPR characteristics and ZnO exciton peaks, which complement
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Figure 1:
XRD patterns (a), FE-SEM images of as-deposited ZnO and Au nanoparticle/ZnO structures using the ch...