Photoluminescence properties of solid-state Tb3+ doped NaY(MoO4)2
Hai-yan Liu , Kun Zhang , Li-bin Pang , Shao-jie Gao , Zhan-jun Gao , Ping-guang Duan , Zi-cai Zhang , Zhi-jun Wang
Optoelectronics Letters ›› : 451 -454.
Photoluminescence properties of solid-state Tb3+ doped NaY(MoO4)2
A series of Tb3+ doped NaY(MoO4)2 are synthesized by a solid-state reaction at 550 °C for 4 h, and their luminescent properties are investigated. The phase formation is carried out with X-ray powder diffraction analysis, and there is no other crystalline phase except NaY(MoO4)2. NaY(MoO4)2:Tb3+ can produce the green emission under 290 nm radiation excitation, and the luminescence emission peak at 545 nm corresponds to the 5D4→7F5 transition of Tb3+. The emission intensity of Tb3+ in NaY(MoO4)2 is enhanced with the increase of Tb3+ concentration, and there is no concentration quenching effect. The phenomena are proved by the decay curves of Tb3+. Moreover, the Commission International de I’Eclairage (CIE) chromaticity coordinates of NaY(MoO4)2:Tb3+ locate in the green region.
Emission Intensity / Decay Curve / Luminescent Property / Scheelite / Green Emission
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