Optical properties of Pr3+, Sm3+ and Er3+ doped P2O5–CaO–SrO–BaO phosphate glass

Doping level effect on the luminescence efficiency of Sm<SUP align="right">3+</SUP>-doped BaWO<SUB align="right">4 phosphors prepared by sol-gel process

“…The emission band centred at ~561 nm is assigned to 4 G 5/2 → 6 H 5/2 transition, while the band centred at ~596 nm is assigned to 4 G 5/2 → 6 H 7/2 transition, the band centred at ~643 nm is assigned to 4 G 5/2 → 6 H 9/2 transitions, and the band centred at ~703 nm is assigned to 4 G 5/2 → 6 H 11/2 transitions. Among the four emission bands, the transition 4 G 5/2 → 6 H 9/2 (~643 nm) are obviously intensest, different from the transition 4 G 5/2 → 6 H 7/2 as usually reported in previous literature (Mazurak et al, 2010;Lakshminarayana et al, 2009;Henrie et al, 1976;Lakshminarayana and Buddhudu, 2006). This implies that the Sm 3+ in the phosphors shows more red emission compared to orange red emission, although the 4 G 5/2 → 6 H 9/2 transition has almost same intensity as the 4 G 5/2 → 6 H 7/2 transition in natural CaWO 4 crystals (scheelite) as reported in some previous literature (Chang et al, 2002).…”

“…The Sm 3+ (4f 5 ) ion is one of the most interesting trivalent rare earth ions because the fluorescence properties emitting 4 G 5/2 level exhibits relatively high quantum efficiency (Mazurak et al, 2010;Lakshminarayana et al, 2009;Henrie et al, 1976;Lakshminarayana and Buddhudu, 2006).…”

Absorption and luminescence of PrCl3 in methanol, iso-propanol and butanol solvents

“…The estimated values of the radiative parameters for the 3 P 0 → 3 F 4 fluorescence emission are comparable to that of the other host matrices [11,18].…”

Excitability of high-energy ultraviolet radiation for Dy3+ in antimony phosphate glasses

“…The host material of glass is a non-negligible factor for the active RE 3+ to obtain efficient florescence [8][9][10][11][12][13][14][15][16][17][18][19]. Among all oxide glass laser materials, phosphate glasses have been a subject of considerable interest due to their unique properties such as high transparency, low production cost, high RE 3+ ion solubility and large emission cross section [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Up to now, many researchers have devoted themselves with great enthusiasms to the studies of RE 3+ doped phosphate glass systems, and great achievements have been reported on their spectral characteristics [36][37][38].…”