13 October 1994 Preparation and optical properties of CdS microcrystallite-doped glasses from silica gels containing dithiocarbamatocadmium complex
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Abstract
We have prepared CdS-doped SiO2 glasses from silica gels containing several types of dithiocarbamatocadmium complexes. The CdS microcrystallites doped in SiO2 glasses which were obtained from these complexes showed very slight discrepancy from stoichiometry. The maximum doping amounts were influenced by stability and solubility of the complexes in solution. In the optical absorption spectra and the photoluminescence spectra of glasses of Cd/Si equals 0.01 prepared using Cd[S2CN(C2H5)2]2 and Cd[S2CNCH3(C2H4OH)]2, the absorption edge and the emission peak observed for the glass using Cd[S2CNCH3(C2H4OH)]2 were at longer wavelengths compared with Cd[S2CN(C2H5)2]2. These differences are ascribed to the formation of larger CdS particles by agglomeration or precipitation because Cd[S2CNCH3(C2H4OH)]2 is more labile in solution than Cd[S2CNCH3(C2H4OH)]2. In the photoluminescence spectra, the emission peak with photoluminescence decay composed of several hundreds picosecond order and several nanosecond order was only observed at around the absorption edge. There was no change in the photoluminescence decay components by changing the kinds of dithiocarbamatocadmium complexes.
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Tsutomu Minami, Tomoaki Iwami, Kiyoharu Tadanaga, Masahiro Tatsumisago, "Preparation and optical properties of CdS microcrystallite-doped glasses from silica gels containing dithiocarbamatocadmium complex", Proc. SPIE 2288, Sol-Gel Optics III, (13 October 1994); doi: 10.1117/12.188950; https://doi.org/10.1117/12.188950
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