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

Abstract

High-efficiency energy transfer (ET) from Sm3+ to Eu3+ leads to dominant red emission in Sm3+, Eu3+ co-doped single-phase cubic CeO2 phosphors.

Judd–Ofelt Intensity Parameters and Optical Properties of Eu/Li Co‐Doped CeO2 Phosphor

“…It is known that the CeO 2 host can efficiently absorb UV light and transfer its energy to RE (Eu) ions, making it an attractive UV-excited host. [10,20] Therefore, the emission efficiency of Eu-doped CeO 2 oxides could significantly enhance which are caused by those energy transfer (ET) and spectral resonance between the CTB and the 4 f-4 f transitions (Eu). [20,21] G. Vimal et al [22] reported the ET from the CeO 2 host to Eu 3 + in CeO 2 : Eu 3 + phosphor, resulting in its efficiency emission being enhanced.…”

“…[6][7][8] Practically, rare-earth (RE) trivalent ions doped CeO 2 lattice is the simplest way to improve their physicochemical properties for industrial multifunction applications due to their close ionic radius to that of Ce 4 + ion. [9,10] Therefore, various appoaches to synthesizing REdoped CeO 2 nanoparticles include the hydrothermal method, [11] co-precipitation, [12] sol-gel, [13] solution combustion, [10,14] solidstate reaction, [15] etc. Notably, the combustion method was widely selected because of various advantages compared with other methods such as easy synthesis, energy saving, high purity, and good crystallinity.…”

“…The mechanical, electrical, morphological, and optical properties of CeO 2 host lattice could be enhanced depending on selective dopant ions [6–8] . Practically, rare‐earth (RE) trivalent ions doped CeO 2 lattice is the simplest way to improve their physicochemical properties for industrial multifunction applications due to their close ionic radius to that of Ce 4+ ion [9,10] . Therefore, various appoaches to synthesizing RE‐doped CeO 2 nanoparticles include the hydrothermal method, [11] co‐precipitation, [12] sol–gel, [13] solution combustion, [10,14] solid‐state reaction, [15] etc.…”

“…Accordingly, various approaches are used to enhance the emission efficiency of Eu‐doped‐based CeO 2 multifuctional materials. It is known that the CeO 2 host can efficiently absorb UV light and transfer its energy to RE (Eu) ions, making it an attractive UV‐excited host [10,20] . Therefore, the emission efficiency of Eu‐doped CeO 2 oxides could significantly enhance which are caused by those energy transfer (ET) and spectral resonance between the CTB and the 4 f –4 f transitions (Eu) [20,21] .…”