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Luminescence properties and energy transfer of K3LuF6:Tb3+,Eu3+ multicolor phosphors with a cryolite structure.


ABSTRACT: In recent years, compounds with a cryolite structure have become excellent hosts for luminescent materials. In this paper, Tb3+ doped and Tb3+/Eu3+ co-doped K3LuF6 phosphors were prepared via a high temperature solid phase sintering method. The XRD, SEM, as well as photoluminescence excitation (PLE) and emission (PL) spectra were measured to investigate the structure and luminescence properties of the as-prepared samples. In the Tb3+/Eu3+ co-doped K3LuF6 samples, both characteristic emission spectra of Tb3+ and Eu3+ could be observed and the emission color of the K3LuF6:0.12Tb3+,xEu3+ phosphors could be adjusted from green to yellowish pink and the corresponding CIE values could be regulated from (0.2781, 0.5407) in the green area to (0.4331, 0.3556) in the yellowish pink area by controlling the concentration ratio of Eu3+/Tb3+. In addition, the energy transfer mechanism in Tb3+/Eu3+ co-doped K3LuF6 was calculated to be a quadrupole-quadrupole interaction from Tb3+ to Eu3+ based on the Dexter's equation.

SUBMITTER: Yang D 

PROVIDER: S-EPMC9060547 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Luminescence properties and energy transfer of K<sub>3</sub>LuF<sub>6</sub>:Tb<sup>3+</sup>,Eu<sup>3+</sup> multicolor phosphors with a cryolite structure.

Yang Dan D   Liao Libing L   Guo Qingfeng Q   Mei Lefu L   Liu Haikun H   Zhou Tianshuai T   Ye Huan H  

RSC advances 20190101 8


In recent years, compounds with a cryolite structure have become excellent hosts for luminescent materials. In this paper, Tb<sup>3+</sup> doped and Tb<sup>3+</sup>/Eu<sup>3+</sup> co-doped K<sub>3</sub>LuF<sub>6</sub> phosphors were prepared <i>via</i> a high temperature solid phase sintering method. The XRD, SEM, as well as photoluminescence excitation (PLE) and emission (PL) spectra were measured to investigate the structure and luminescence properties of the as-prepared samples. In the Tb<su  ...[more]

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