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