Synthesis, Optical properties and, amplified spontaneous emission of hybrid Ag-SiO2–CdTe nanocomposite

In this work, a hybrid nanocomposite of metal-dielectric-semiconductor; Ag-SiO2â CdTe nanoparticles (NPs) has been synthesized. Silica shell was used as a spacer to isolate and control the distance between Ag plasmonic and luminescent CdTe QDs. It was found that insertion of silica shell enhances the plasmonic field more than 31%. Accordingly, Ag-SiO2 plasmonic enhances the luminescence and quantum yield of CdTe QDs by 200% and 55%, respectively. The threshold power of amplified spontaneous emission of CdTe was found to depend on temperature and excitation wavelength location with respect to Plasmon and exciton absorption. This nanocomposite could be potentially used in light emitting diodes, biological sensing and thermal therapy.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author