ABSORPTION AND EMISSION-SPECTRA OF EU3+ DOPED FLUOROBORATE GLASS

This paper reports the preparation of certain newly developed Eu3+ - d oped fluoroborate glasses with H3BO3 and Na2Co3 as the network formers (NWF) and the fluorides of alkali (Na or Li) as the network intermedi ates (NW1). Further, by adding AlF3 to the fluoroborate glasses, prope rties such as glass transparency; hardness; resistivity towards moistu re and lR-transmission ability were found improved significantly. Unde r a UV source, these colourless Eu3+ - glasses did reveal brighter red emission. Compositional effects on the absorption and photoluminescen ce spectra of Eu3+ fluoroborate glasses were examined from their measu red spectrophotometric profiles.