STUDIES ON ABSORPTION-SPECTRA OF MIXED ZINC-CADMIUM SULFIDE MICROPARTICLES STABILIZED IN AOT-HEPTANE-WATER AND CTAB-CHLOROFORM-WATER INVERSE MICELLAR SYSTEMS
Gc. De et al., STUDIES ON ABSORPTION-SPECTRA OF MIXED ZINC-CADMIUM SULFIDE MICROPARTICLES STABILIZED IN AOT-HEPTANE-WATER AND CTAB-CHLOROFORM-WATER INVERSE MICELLAR SYSTEMS, Journal of photochemistry and photobiology. A, Chemistry, 92(3), 1995, pp. 189-192
Ultrafine particles composed of mixed crystals of ZnxCd1-xS can be gen
erated in situ in AOT-heptane-water and CTAB-chloroform-water microemu
lsions using an ultrasonic processor. The microcrystallites exhibit th
e ''quantum size effect''. The composition of mixed sulphides and the
water content (pool size) of inverted micelles can be varied systemati
cally and the band gap energies of the semiconductor particles can be
determined from the photoabsorption thresholds (edges). The experiment
al results reveal that a homogeneous solid solution of two sulphides i
s formed in CTAB-chloroform-water system. A method is proposed for det
ermining the bulk optical dielectric constants of solid solutions of t
wo semiconductors employing the Brus equation.