A novel luminescent property from composite of ZnS nanocrystallites and organic chromophore molecules

Abstract ZnS nanocrystallites doped with organic dye (molecular chromophore) have been synthesized using a simple chemical method. Composite ZnS nanoparticles having different sizes and morphology can be obtained. The size of these composite nanoparticles is typically 10–30 nm. A dramatic increase in the luminescence intensity and a change in the emission wavelength have been observed from the composite nanoparticles. Because of the different structure and properties of dyes, the absorption, excitation and emission spectra of the composite nanoparticles vary with different dyes.