Abstract
Phosphorescence (PP) and photoluminescence (PL) spectra on type-I and type-II fused silica have been measured. Comparison among them shows that the same bands are present in the PL and PP spectra; the only exception is the ‘‘resonant’’ emission excited in the absorption band (∼5.1 eV) which is always absent in the PP spectrum. At low temperature in one of the PL emission bands, structures have been found whose energy spacing, ∼1250 , appears to identify the luminescent center as the molecular ion.
- Received 24 December 1986
DOI:https://doi.org/10.1103/PhysRevB.35.9407
©1987 American Physical Society