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Enhancement of emission characteristics of cadmium-free ZCIS/ZnS/SiO2 quantum dots by Au nanoparticles
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10.1063/1.4739246
/content/aip/journal/apl/101/4/10.1063/1.4739246
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/4/10.1063/1.4739246
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Figures

Image of FIG. 1.
FIG. 1.

(a) Transmission electron microscopy image of ZCIS/ZnS/SiO2 nanocomposites. (b) Scanning electron microscope image of Au nanoparticles on glass substrate.

Image of FIG. 2.
FIG. 2.

Transmission spectrum of Au NPs and the emission spectra of green ZCIS/ZnS core/shell QDs with and without SiO2 shells onto Au NPs, the emission spectra of QDs on bare glass substrate are also included, respectively. The peak wavelength of QDs is at about 535 nm. The inset is the absorption spectrum of the ZCIS/ZnS QDs.

Image of FIG. 3.
FIG. 3.

(a)–(c) Gaussian fit analysis of the emission spectra of ZCIS/ZnS/SiO2 quantum dots on bare glass and onto Au NPs of different size. (d) The comparison diagram of normalized PL spectra of QDs on different substrate.

Image of FIG. 4.
FIG. 4.

Transmission spectrum of larger Au NPs, and the emission spectra of yellow ZCIS/ZnS/SiO2 core/shell QDs with and without Au NPs. The peak wavelength of QDs is at about 563 nm. The inset is the absorption spectrum of the yellow QDs.

Image of FIG. 5.
FIG. 5.

Relaxation dynamics monitored at the emission wavelength of 535 nm from ZCIS/ZnS/SiO2 quantum dots with and without Au nanoparticles.

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/content/aip/journal/apl/101/4/10.1063/1.4739246
2012-07-26
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhancement of emission characteristics of cadmium-free ZCIS/ZnS/SiO2 quantum dots by Au nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/4/10.1063/1.4739246
10.1063/1.4739246
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