Preparation of CdS-doped Glasses from Gels Containing Diethyldithiocarbamatocadmium |
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| Authors: | Tomoaki Iwami Kiyoharu Tadanaga Masahiro Tatsumisago Tsutomu Minami Noboru Tohge |
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| Affiliation: | Department of Applied Materials Science, Osaka Prefecture University, Sakai, Osaka 593, Japan;Department of Metallurgical Engineering, Kinki University, Osaka 577, Japan |
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| Abstract: | ![]()
CdS-doped SiO2 glasses were prepared via silica gels containing diethyldithiocarbamatocadmium Cd(S2CN(C2H5)2)2. Heat treatment of the gels gave transparent yellow SiO2glasses doped with hexagonal CdS crystals. In optical absorption and fluorescence spectra, the optical absorption edge and the emission peak clearly exhibited a blue shift, which was attributed to the quantum size effect of the carrier confinement, as the CdS content was decreased. In the fluorescence spectra of the CdS-doped silica glasses, the emission peak was observed only near 500 nm and not observed at longer wavelengths which were known to be present if there were sulfur vacancies. |
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