Effect of A+ (A = Li, Na and K) co-doping on enhancing the luminescence of Ca5(PO4)2SiO4:Eu3+ red-emitting phosphors as charge compensator

A novel near-infrared phosphor Mg2InSbO6:Cr3+ with high quantum efficiency and considerable persistent luminescence duration

“…1d and e, the particles are irregular, which can be usually observed in the image of phosphors prepared by high temperature solid state reactions. 18 The corresponding elemental distribution maps (Fig. 1f) exhibit that Mg, In, Sb, O and Cr elements are distributed evenly in the sample, and aggregation is basically absent.…”

Enhanced Red Emission of Na5Lu9F32: Eu3+ Single Crystal by Introducing of GdF3

“…One is the broad band at the wavelength from 200 to 275 nm, corresponding to the CTB from F À to Eu 3 + . [18,19] The other is serial sharp excitation peaks of Eu 3 + in the wavelength range of 350~500 nm, which are located at 320, 363, 383, 394, and 417 nm, respectively, owing to the transitions from the Eu 3 + : 7 F 0 ground state to the 5 H 6 , 5 D 4 , 5 G 2 , 5 L 6 , and 5 D 2 excited states. Among them, the excitation intensity at 394 nm is the highest except for CTB, corresponding to the 7 F 0 !…”

Photoluminescence enhancement of orange-emitting Ca5(PO4)2SiO4:Sm3+ phosphor through charge compensation of A+ (Li+, Na+ and K+) ions for white light-emitting diodes

“…[24][25][26] The hexagonal Ca 5 (PO 4 ) 2 SiO 4 (C 5 PSO) structure can be obtained based on the substitution equation (PO 4 ) 3− + Y − = (SiO 4 ) 4− and it served as a good phosphor host. [27][28][29][30] In addition, the electrons in the 4f orbital of rare earth Sm 3+ ions can be transmitted to the 6 H J ( J = 9/2, 7/2, 5/2) level from the 4 G 5/2 ground state, which realizes the Sm 3+ -doped phosphors emitting an orange light to improve the CCT value of w-LEDs. [31][32][33] However, in the study of rareearth doped C 5 PSO phosphors, the C 5 PSO:Sm 3+ orange phosphor has been rarely reported until now.…”