Coloration and decoloration of glasses by photo-irradiation and heat treatment for easily recycled glass products

Kohei Kadono; T. Akai; M. Yamashita; J. Sheng; S. Chen; Z. Yao; N. Itakura; T. Yamate; Y. Utagawa; Y. Matsumoto; T. Yazawa

doi:10.1117/12.517342

16 July 2003 Coloration and decoloration of glasses by photo-irradiation and heat treatment for easily recycled glass products

Kohei Kadono, T. Akai, M. Yamashita, J. Sheng, S. Chen, Z. Yao, N. Itakura, T. Yamate, Y. Utagawa, Y. Matsumoto, T. Yazawa

Author Affiliations +

Proceedings Volume 5061, International Symposium on Photonic Glass (ISPG 2002); (2003) https://doi.org/10.1117/12.517342
Event: International Symposium on Photonic Glass, 2002, Shanghai, China

Abstract

We have been developing a technique of coloration and decoloration of glasses by photo-irradiation and heat-treatment for application to easily recyclable colored glass products. The mechanisms of the photo-induced coloration of glasses used in this research are a) the photo-induced defects (color centers) formation, b) the photo-induced change in oxidation state of ions, and c) the photo-induced formation of nanoparticles in glasses. The subjects for application of these phenomena to recyclable colored-glass products are presented. The research examples for each mechanism are presented in this paper as follows: 1) the effect of the doped Fe ions on the optical density and stability of coloration due to color centers, 2) the coloration by the change in oxidation state, (formula available in paper) and 3) the reversible coloration and decoloration for an Ag single-doped glass.

Citation Download Citation

Kohei Kadono, T. Akai, M. Yamashita, J. Sheng, S. Chen, Z. Yao, N. Itakura, T. Yamate, Y. Utagawa, Y. Matsumoto, and T. Yazawa "Coloration and decoloration of glasses by photo-irradiation and heat treatment for easily recycled glass products", Proc. SPIE 5061, International Symposium on Photonic Glass (ISPG 2002), (16 July 2003); https://doi.org/10.1117/12.517342

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