A single-composition tunable-emission phosphor NaTaOGeO4:Mn2+,Pr3+

作者：Yu, Panlong; Tian, Lianhua^*

来源：Optical Materials, 2018, 85: 444-450.

DOI：10.1016/j.optmat.2018.09.002

• Transition metal
• Phosphors
• Color tunable
• Luminescence
• Energy transfer
• Mn2+ and Pr3+ co-doped

The photoluminescence properties of NaTaOGeO4:Mn2+, Pr3+ are investigated in this paper. Their luminescent properties were characterized by means of diffuse reflection, photoluminescence excitation and emission spectra, lifetime and temperature-dependent emission spectra in the temperature range of 295-495 K. The phosphors NaTaOGeO4:Mn2+ show a strong broad absorption band centered at about 248 nm. The emission spectrum of NaTaOGeO4:Mn2+ shows orange-red emissions at 576 nm, owing to the T-4(1) -> (6)A(1) transition of Mn2+. With the introduction of Pr3+ ions into NaTaOGeO4:Mn2+, the emission spectra exhibit both the T-4(1) -> (6)A(3) transition of Mn2+ and the P-3(0 ->) H-3(4) transition of Pr3+ with the excited wavelength at 248 nm. The emission color of NaTaOGeO4:Mn2+, Pr3+ can be tuned by adjusting the relative concentration of Mn2+ and Pr3+ in a single component. The energy transfers from Mn2+ to Pr3+.

• 出版日期2018-11
• 单位延边大学