Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1517878 | Journal of Physics and Chemistry of Solids | 2007 | 5 Pages |
Abstract
CdS particles with crystallite size of 5–12 nm have been prepared via acoustic wave stimulated (sonochemical) route and microwave initiated combustion method. X-ray line broadening and transmission electron microscopy (TEM) suggest that sonochemical powders are more amorphous (5–10 nm) compared to microwave-synthesized sulphides (10–15 nm). The photoluminescent (PL) properties of powders with size <10 nm show a clearly blue shifted, resolved emission with full-width at half-maxima (FWHM) ∼100 nm, while powders with size >15 nm show dominant blue to green narrow emission with FWHM ∼60 nm. The mechanistic details of the synthetic route appear to affect the morphology and consequently the PL properties to a significant extent.
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Authors
Sonia Arora, S. Sundar Manoharan,