Photosensitivity in a silica-based sol-gel glass
- Alfred Univ., NY (United States)
Photosensitivity in glasses containing Au and Ce was first reported by Dalton in 1943 and later reaffirmed by Stookey. The photothermal reduction of Au ions to form metallic colloids was determined to be responsible for the {open_quotes}ruby{close_quotes} color produced in these glasses. In this work, the photosensitive effect has been confirmed for the first time in a silica sol-gel glass containing Au and Ce. Two methods of producing Au colloids in this glass were investigated, one involved a short ultraviolet (UV) exposure followed by a thermal treatment, the other a simultaneous UV irradiation and thermal treatment. Colloid formation was studied using optical absorption spectroscopy, whereas the role of Ce in the photosensitive process was elucidated using optical absorption and fluorescence spectroscopic techniques.
- OSTI ID:
- 472028
- Report Number(s):
- CONF-950401-; TRN: 97:002636-0015
- Resource Relation:
- Conference: 97. annual meeting of the American Ceramic Society, Cincinnati, OH (United States), 30 Apr - 1 May 1995; Other Information: PBD: 1996; Related Information: Is Part Of Ceramic transactions: Synthesis and application of lanthanide-doped materials. Volume 67; Potter, B.G. Jr.; Bruce, A.J. [eds.]; PB: 157 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sol-gel processing of neodymia-silica glass
Manufacture of vitreous silica product via a sol-gel process using a polymer additive