Luminescence efficiency of ions with broad-band excitation in lithium lanthanum phosphate glass

Luminescence from the Pr3+ 4f15d1 and 1S0 states in LiLaP4O12

“…Finally, it is instructive to compare our results with the results obtained on the luminescence of Pr 3+ ion in the glassy modification of LiLaP 4 O 12 [17]. According to reference [17], the following results are obtained in the glassy phase:…”

“…The quenching of 3 P 0 luminescence and the appearance of 1 D 2 luminescence is due to the efficient 3 P J -1 D 2 (nonradiative) relaxation by multiphonon relaxation (MPR). The MPR process is efficient because of the high phonon frequency of the host lattice ($1400 cm À1 ) [17]. This has been discussed in detail elsewhere [8,9].…”

“…The luminescence of several rare earth ions in crystalline and glassy modifications of LiLaP 4 O 12 has been reported in the archival literature [15][16][17]. However, to the best of our knowledge, the VUV excited luminescence of the Pr 3+ ion in the crystalline phase of LiLaP 4 O 12 has not been reported in the literature.…”

Study of the Vibronic Transitions of Gd3+and Eu3+in Crystalline Materials and Glasses of the Same Composition

“…(10) and (11), respectively. To obtain glasses, the starting materials were heated at 1200°C for half an hour in quartz crucibles and subsequently poured out in carbon crucibles (at room temperature).…”

“…The position of these vibronic transitions is in agreement with data from the literature on Raman and IR spectroscopy on these materials. These vibronic transitions are ascribed to coupling with P-O stretching vibrations (9)(10)(11).…”