Reactivity of SiCl and SiF groups in SiO2 glass with mobile interstitial O2 and H2O molecules
- 作者：Koichi Kajihara ; Masahiro Hirano ; Linards Skuja ; Hideo Hosono
- 关键词：Chemical properties ; Diffusion and transport ; Optical properties ; Absorption
- 刊名：Journal of Non-Crystalline Solids
- 出版年：2007
- 期刊代码：50_00223093
- 类别：ms
- 出版时间：1 April 2007
- 卷：353
- 期：5-7
- 页码：514-517
- 文件大小：216 K
摘要
Reactions of common network-bound halogens in synthetic SiO2 glass, SiCl and SiF groups, with interstitial O2 and H2O molecules incorporated by thermally annealing were studied. It was found that the chemical properties are distinctly different between SiCl and SiF groups. SiCl groups react with interstitial O2 and H2O to form interstitial Cl2 and HCl, respectively. In contrast, formation of interstitial F2 and HF due to the reaction of SiF groups with interstitial O2 and H2O is not observed. The reactivity of SiCl and SiF groups is in accord with the properties and thermodynamic data of their respective analogous compounds, SiCl4 and SiF4.