Abstract
In this Communication, the origin of the graphite-induced UV transparency in phosphate glasses is scrutinized beyond the commonly accepted reduction of metal impurities. A systematic study was carried out by melting phosphate glasses with increasing amounts of graphite powder. Subsequent characterizations were performed by UV/Vis transmission, photoluminescence, 31P nuclear magnetic resonance and x-ray photoelectron spectroscopies. The data points to a structural modification accompanying the enhanced UV transparency. A model accounting for P[sbnd]O[sbnd]C bond formation and the generation of reactive oxygen species is proposed in line with the new structural view suggested.
| Original language | English |
|---|---|
| Pages (from-to) | 42-46 |
| Number of pages | 5 |
| Journal | Optical Materials |
| Volume | 62 |
| DOIs | |
| State | Published - Dec 1 2016 |
Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- General Computer Science
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Electrical and Electronic Engineering
Keywords
- Glasses
- Luminescence
- Optical properties