Energy Transfer between Inorganic Ions in Glasses.
Abstract
Inorganic glasses doped by rare earth (Gd(3+),Eu(3+),Sm(3+),Tb(3+),Tm(3+),Er(3+) and lead ions were prepared. Intensity parameters and probabilities of radiative electronic transitions were calculated from the experimentally obtained fluorescence and adsorption spectra. Nonradiative transition probabilities between various electronic levels were obtained from the quantum yields of the fluorescence and fluorescence life-times. A connection was found between the phonon energies of the glasses and the luminescence quantum yields of rare earth ions incorporated in these glasses. The amount of covalency between a given glass and a heavy metal ion was obtained from a study of optical characteristics of divalent lead in various glasses. A connection has been found between the nephelauxetic effect and electronegativity of the glasses. The probability of energy transfer between gadolinium and samarium was measured in borate glasses and the mechanism of transfer suggested. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1973
- Accession Number
- AD0775425
Entities
People
- Renata Reisfeld
Organizations
- Hebrew University of Jerusalem