Spectroscopic laser parameters of Ag/CdTe nanostructure

We report spectroscopic laser parameters analysis for CdTe quantum dots (QDs) in the presence of Ag nanoparticles (NPs). Absorption and emission cross-sections of about 2 nm-particle size of aqueous CdTe QDs were estimated, when different contents of about 40 nm Ag nanoparticles were added. The fluorescence, radiative lifetimes and the energy transfer between Ag NPs and CdTe QDs have been investigated. Lasing parameters that evaluate the possibility of getting laser action for these nanomaterials were calculated. The energy transfer mechanism between Ag NPs and CdTe QDs was occurred by Forster resonance energy transfer (FRET) as the average distance between them is about 50 nm.