Abstract
A nano-topological luminophor model of Y2O3:Eu3+ + Ag was designed based on the improvement of radiation transition rate of the illuminating center by surface plasmon excitation. Homogeneous Y2O3:Eu3+ + AgCl nanosheets were synthesized through a facile non-aqueous solvothermal method and subsequent heat treatment. By adding AgNO3 in the thermal reaction of the solvent, Y2O3:Eu3+ + AgCl was generated in the preparation process. Then the AgCl was decomposed into elemental Ag to obtain a nano-topological structure of Y2O3:Eu3+ + Ag after ultraviolet treatment. The size of nano-topological luminophor Y2O3:Eu3+ + Ag reached 20 × 20 nm with a thickness of 2 nm, and it emitted red light with a wavelength of 613 nm under the excitation of 245 nm ultraviolet light and electric field. The photoluminescence (PL) properties of the nano-topological luminophor Y2O3:Eu3+ + Ag was approximately about 50% higher than that of Y2O3:Eu3+ under the same conditions, and the electroluminescence (EL) properties was increased by about 200%. It is thought that by reducing the light response threshold of the nano-topological luminophor, the intensity of both PL and EL can be improved simultaneously. This nano-topological luminophor Y2O3:Eu3+ + Ag provides a new way to design phosphors with high luminescence intensity.
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