Eu3+-doped glass materials for red luminescence

Red luminescence (at wavelength about 622 nm) from Eu3+ ions embedded in Pb O-Bi2O3-Ga2O3-BaO glass hosts is reported for room and liquid helium temper atures. The substantial influence of energy transfer processes between the host and Eu3+ ions is shown experimentally through the dependences of photo luminescence on light polarization and excitation wavelength. Only polarize d, excited pulsed XeII laser light (lambda = 714 nm) gives substantial lumi nescence with efficiency up to 14.3%. The role of phonon-relaxation subsyst em in the observed luminescence is discussed. (C) 2001 Elsevier Science Ltd . All rights reserved.