Synthesis and luminescence property of Li2BaP2O7:Ln3+ (Ln=Eu, Sm) phosphors

Luminescence characteristics of C 5+ ions and 60 Co irradiated Li 2 BaP 2 O 7 :Dy 3+ phosphor

“…To prepare the Li 2 BaP 2 O 7 :Dy phosphors, same procedure was followed as described in [26]. The starting precursors Li 2 CO 3 (Merck GR-99%), BaCO 3 (Merck GR-99%), NH 4 H 2 PO 4 (Merck GR-99%) and Dy 2 O 3 (Loba Chemicals-99%) were of analytical grade.…”

“…In 2002, Nezha Dridi et al investigated the synthesis and crystal structure of dilithium barium diphosphate Li 2 BaP 2 O 7 [25]. Eu 3+ and Sm 3+ activated luminescence properties of Li 2 BaP 2 O 7 were reported by Wani et al [26].…”

Synthesis and luminescence characterization of Sr0.5Ca0.5TiO3:Sm3+ phosphor

“…For the emission at 599 nm, the excitation spectra shows bands at 363 nm, 377 nm, 405 nm, 418 nm, 437 nm, 464 nm, 479 nm, 489 nm and 528 nm corresponding to the transitions from 6 H 5/2 to 3 F 9/2 , 4 D 5/2 , 4 F 7/2 , 6 P 5/2 , 4 G 9/2 + 4 I 15/2 , 4 F 5/2 + 4 I 13/2 , 4 I 11/2 + 4 M 15/2 , 4 G 7/2 and 4 F 3/2 respectively [17,33]. The highest excitation peak is at 405 nm corresponding to 6 H 5/2 → 4 F 7/2 transition.…”

“…The peak at 599 nm corresponding to the transition 4 G 5/2 → 6 H 7/2 is partially magnetic and partially a forced electric dipole transition by the selection rule ∆J = ±1 [39]. The peak at 645 nm corresponds to the 4 G 5/2 → 6 H 9/2 transition which is an electric dipole (ED) transition [33]. Usually the symmetry of the local environment of the trivalent 4f ions is measured by calculating the intensity ratio of the electric dipole transition to the allowed magnetic dipole transition.…”

Citric acid-mediated microwave-assisted hydrothermal synthesis and luminescence property of NaSm(MoO4)2 submicro-crystals

“…ion used in commercial red phosphors, hence more and more interests have been focused on the the red phosphor materials doped with Sm 3? [15][16][17].…”