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A simple chemical conversion method has been demonstrated to synthesize mesoporous LuPO4: Ln3+ (Ln = Eu, Tb, Dy, Sm) phosphors with high crystallinity and uniform morphology using the Lu4O(OH)9NO3 as a sacrificial precursor and H3PO4 as a phosphorus source. We proposed that the employment of a thermally stable, highly crystalline, and large surface area mesoporous LuPO4 as the doped matrix was the...
Dy3+ and Eu3+ codoped KSr4(BO3)3 phosphors were successfully synthesized by solid-state reaction process. Under near-ultraviolet (near-UV) excitation, individual Dy3+ or Eu3+ ion activated sample exhibits characteristic emissions in their respective regions. In KSr4(BO3)3:Dy3+, xEu3+ phosphors, the energy transfer from Dy3+ to Eu3+ was revealed to be resonant type by dipole–dipole mechanism. And the...
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