Preparation and optical properties of CdS microcrystallite-doped glasses from silica gels containing dithiocarbamatocadmium complex

Tsutomu Minami; Tomoaki Iwami; Kiyoharu Tadanaga; Masahiro Tatsumisago

doi:10.1117/12.188950

13 October 1994 Preparation and optical properties of CdS microcrystallite-doped glasses from silica gels containing dithiocarbamatocadmium complex

Tsutomu Minami, Tomoaki Iwami, Kiyoharu Tadanaga, Masahiro Tatsumisago

Author Affiliations +

Proceedings Volume 2288, Sol-Gel Optics III; (1994) https://doi.org/10.1117/12.188950
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

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, and 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); https://doi.org/10.1117/12.188950

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