- P-ISSN 1225-0163
- E-ISSN 2288-8985
Poly(vinylpyrrolidone) stabilized cadmium sulfide (CdS) nanoparticles were loaded onto the surface of silica (<TEX>$SiO_2$</TEX>) nanoparticles by using <TEX>${\gamma}$</TEX>-irradiation. TEM micrograph reveals the presence of ~20nm sized CdS nanoparticles on the surface of <TEX>$SiO_2$</TEX> nanoparticles. XRD patterns confirm the crystalline. PL spectra of the simple PVP-stabilized CdS nanoparticle and <TEX>$SiO_2$</TEX>@CdS composite confirm the differences in the emission characteristics between them. Two prominent emission peaks were noted around 550 nm and 600 nm for PVP-stabilized CdS nanoparticles). The emission peaks noted for the PVP-stabilized CdS nanoparticles were found to be blue shifted for <TEX>$SiO_2$</TEX>@CdS composites. Besides, an additional emission peak around 450 nm was noticed for the <TEX>$SiO_2$</TEX>@CdS composite. The presence of CdS nanoparticles influence the emission characteristics and induce quantum confinement effect.
Klug, (1974) X-ray diffractionprocedure for polycrystalline and amorphous materialsWiley,