Photoluminescence properties and energy transfer mechanisms of Na4CaSi3O9: Sm3+, Eu3+ novel orange-red phosphors

High-efficiency energy transfer in the strong orange-red-emitting phosphor CeO2:Sm3+, Eu3+

“…By contrast, τ 2 is the decay component associated with Sm 3+ sites substituted for Ce 4+ ions on the CeO 2 host lattice. 33 The average lifetimes ( τ ) can be described as eqn (5): 34 …”

Locally-ordered A-site vacancy assisted photoluminescence enhancement in simply rare-earth doped perovskite oxide

“…It is generally documented that the PL emission intensity for a phosphor would experience lowering all the way with rising the temperatures due to the substantial increase in non-radiative relaxation rate. 40 However, with increasing the measurement temperatures, the PL intensity of the two transitions (600 and 647 nm) for V A -CST-0.02 shows a similar trend, i.e. firstly increases and then decreases, giving rise to a maximum at 100 .…”

Synthesis of a Sm3+-doped YGa1.5Al1.5(BO3)4 phosphor via a mechanical activation-assisted solid-state reaction

“…Trivalent samarium as one of the rare-earth elements is frequently used as an effective red activator for phosphor hosts including phosphates, borates, silicates, vanadates, molybdates, etc. [16][17][18][19][20][21][22][23][24][25] Most of the phosphors were prepared via solidstate reactions. Among them, the Ba 3 Y 4 O 9 :Sm 3+ phosphor shows good thermal stability, and its luminescence intensity at 473 K is decreased by 25.75% of its initial intensity.…”