Luminescence properties and energy transfer investigations of Sr3Gd(PO4)3:Ce3+,Tb3+ phosphors

Luminescence properties and energy transfer in Ca3(PO4)2:Ce3+, Tb3+ phosphors

“…(544 nm) and displays two absorption sections at 200-300 and 300-400 nm, which are attributed to the 4f 8 -4f 7 5d transitions and the 4f 8 -4f 8 transitions of Tb 3? , respectively [6]. The excitation spectrum in lower wavelength range (200-300 nm) includes a strong band with maximum at 223 nm and a weak band peaking at 263 nm, which correspond to two different f-d transitions: spin-allowed (DS = 1) and spin-forbidden (DS = 0) of the 4f 8 -4f 7-5d transitions, respectively [23].…”

“…[2][3][4][5], Ce 3? [1,[6][7][8][9]) is usually introduced in the host to improve the absorption of Tb 3? in the n-UV region, which has been extensively studied in silicates, aluminates, borates, phosphates, and so on.…”

“…For the aluminate and phosphate compounds, such as ZnAl 2 O 4 , CaYAl 3 O 7 , Sr 2 P 2 O 7 , Sr 3 Gd(PO 4 ) 3 and KSrY(PO 4 ) 2 , the available energy transfer between Ce 3? and Tb 3? also diffusely exists [6,[12][13][14][15]. The most famous representative ones are phosphors LaPO 4 :Ce 3?…”

Luminescence properties and energy transfer investigations of Zn2P2O7: Ce3+, Tb3+ phosphor

“…Based on this, Ce 3 þ ions are suitable sensitizer in the co-doped materials, transferring a part of their energy to activator Tb 3 þ ions. Up to now, a number of Ce 3 þ and Tb 3 þ co-doped materials have been reported, including silicates, aluminates, phosphates, fluorides, oxy-nitrides/nitrides, for example, BaY 2 Si 3 O 10 : Ce 3 þ , Tb 3 þ , Ca 3 Sc 2 Si 3 O 12 : Ce 3 þ , Tb 3 þ , Ba 3 Gd(PO 4 ) 3 : Ce 3 þ , Tb 3 þ , Ca 2 Al 3 O 6 F: Ce 3 þ , Tb 3 þ , AlN: Ce 3 þ , Tb 3 þ [11][12][13][14][15][16][17][18][19][20]. However, the high reaction temperature (usually over 1200 1C) for the synthesis of aluminates/silicates and other materials may leads to chemical instability, high cost and low thermal stability.…”

Tunable emission and the systematic study on energy-transfer properties of Ce3+- and Tb3+-co-doped Sr3(PO4)2 phosphors

“…Orthophosphate-based phosphors with crystal structure of M 3 (PO 4 ) 2 (M = Zn, Ca, Mg, Sr and Ba) have been attracted much attentions since that they have some excellent properties including chemical, thermal stability and stabilization of ionic charge in the host lattice [21]. At present, the study of ET in rare-earth-doped orthophosphate-based phosphors have has been initiated, such as SrMg 2 (PO 4 ) 2 :Eu 2?…”