Luminescence of Modified Tin-Activated Strontium Orthophosphate

Abstract

The introduction of Al, Zn, Mg, Ca, or Cd in Sr3false(PO4)2 produces a new crystal phase which is probably isomorphous with βCa3false(PO4)2 . Activated with in this Sr‐orthophosphate gives a strong luminescence with a maximum at bout 6300Aå under excitation with 2537Aå.

Polar and Centrosymmetric Phases in Solid Solutions Ca3-xSrx(PO4)2 (0 ⩽ x ⩽ 16/7)

“…The crystal data of -Ca 3 (PO 4 ) 2 2 were used as an initial model for the Rietveld refinements of -Ca 2 Sr-(PO 4 ) 2 and ′-Ca 5/7 Sr 16 Distribution of Ca 2+ and Sr 2+ ions among the M1-M5 sites was preliminarily estimated by imposing the following linear constraints on occupancies, g: g(Sr) + g(Ca) ) 1 for the M1-M3 and M5 sites and g(Sr) + g(Ca) ) 0.5 for the M4 site. The refinement of these occupancies revealed that, in both compounds, Sr 2+ and Ca 2+ ions are located at the M1-M4 sites whereas Ca 2+ ions preferentially occupy the M5 site.…”

Synthesis and Characterization of New Strontium Iron(II) Phosphates, SrFe2(PO4)2 and Sr9Fe1.5(PO4)7

“…: R "3.31% (S"1.67), R "2.58%, R "3.88%, R $ "2.22%, and B"1.59 (3). Table 4 lists experimental/re"nement conditions, "nal R factors, lattice parameters, etc.…”

Hydrothermal synthesis and luminescent properties of Sb3+-doped Sr3(PO4)2

“…Sarver and coworkers [11] reported the luminescence of tin activated strontium orthophosphate. Koelmans and Cox [12] also investigated the luminescence of modified tin activated strontium orthophosphate and found that modified tin activated Sr 3 ðPO 4 Þ 2 could give a strong red luminescence with a maximum peak at about 630 nm under excitation with 253.7 nm. Blasse and coworkers [13] discussed the luminescence of Sb 3+ activated LPO 4 (L=Sc, Lu, Y) and found that existed a Jahn-Teller effect in the emission and excitation spectra of the Sb 3+ ion in the above compounds.…”