Photoluminescence properties of YAG:Tb nano-powders under vacuum ultraviolet excitation

(Gd,La)2-x O2CO3:Eux3+(0.01 ≤x≤0.04) were synthesized via a flux method at 400°C, and their photoluminescence properties under vacuum ultraviolet (VUV) excitation were examined. The excitation spectra showed two bands in the region from 125 nm to 300 nm, the first band centered at 190 nm was ascribed to absorption of related CO32- complex, and the second broad band centered at 246nm and 278nm in Gd2O2CO3:Eu3+ was ascribed to the charge transfer band of O2-→ Eu3+. Series samples exhibited red emission at around 611 nm under vacuum ultraviolet excitation corresponding to the 5D0→ 7F2.transition of Eu3+.

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Size-dependent photoluminescence properties under vacuum ultraviolet excitation of Zn2SiO4:Mn2+ nanophosphors

Journal of Luminescence ◽

10.1016/j.jlumin.2011.06.008 ◽

2011 ◽

Vol 131 (12) ◽

pp. 2674-2678 ◽

Cited By ~ 6

Author(s):

Xue Yu ◽

Xuhui Xu ◽

Yuhua Wang ◽

Jianbei Qiu ◽

Zhengwen Yang ◽

...

Keyword(s):

Vacuum Ultraviolet ◽

Photoluminescence Properties ◽

Size Dependent ◽

Ultraviolet Excitation

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Photoluminescence properties of Eu3+ and Bi3+ in YBO3 host under vacuum ultraviolet/ultraviolet excitation

Journal of Applied Physics ◽

10.1063/1.3053689 ◽

2009 ◽

Vol 105 (1) ◽

pp. 013513 ◽

Cited By ~ 27

Author(s):

Lei Chen ◽

Guangtao Yang ◽

Jiaqin Liu ◽

Xia Shu ◽

Guobin Zhang ◽

...

Keyword(s):

Vacuum Ultraviolet ◽

Photoluminescence Properties ◽

Ultraviolet Excitation

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The photoluminescence properties of Eu3+,Bi3+ co-doped yttrium oxysulfide phosphor under vacuum ultraviolet excitation

Materials Research Bulletin ◽

10.1016/j.materresbull.2008.11.003 ◽

2009 ◽

Vol 44 (5) ◽

pp. 1183-1187 ◽

Cited By ~ 6

Author(s):

Zhilong Wang ◽

Yuhua Wang ◽

Jiachi Zhang ◽

Yanghua Lu

Keyword(s):

Vacuum Ultraviolet ◽

Photoluminescence Properties ◽

Ultraviolet Excitation ◽

Co Doped

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Photoluminescence properties of BaGdB9O16:Tb3+ codoped Zn2+ or Ce3+ under ultraviolet and vacuum ultraviolet excitation

Journal of Materials Research ◽

10.1557/jmr.2007.0025 ◽

2007 ◽

Vol 22 (1) ◽

pp. 238-243 ◽

Cited By ~ 3

Author(s):

Yu Hua Wang ◽

Xiao Xia Li

Keyword(s):

Energy Transfer ◽

Single Phase ◽

Vacuum Ultraviolet ◽

Ultraviolet Region ◽

Photoluminescence Properties ◽

Absorbed Energy ◽

Ultraviolet Excitation ◽

Vacuum Ultraviolet Region ◽

No Absorption

Single phase of Ba1−xZnxGd0.75Tb0.25B9O16 and BaGd0.75−xCexTb0.25B9O16 (0 ≤ x ≤ 0.125) was prepared by the solid-state reaction. Under 254 nm excitation, Zn2+ impaired the emission of Tb3+; Ce3+ sensitized the luminescence of Tb3+ ascribing to the energy transfer of Ce3+ → Tb3+ and/or Ce3+ → Gd3+ → Tb3+ occurring, and the optimum emission was observed at x = 0.05 in BaGd0.75−xCexTb0.25B9O16. Under 147 nm excitation, Zn2+ sensitized the emission of Tb3+ and the optimum emission was obtained at x = 0.075 in Ba1−xZnxGd0.75Tb0.25B9O16, which could be due to the fact that the energy absorption relating to Zn2+ occurred and the absorbed energy was transferred to Tb3+ finally; Ce3+ depressed the luminescence of Tb3+, which could be attributed to the fact that Ce3+ has no absorption in vacuum ultraviolet region and the role of Gd3+ was weakened. Compared with BaGd0.75Tb0.25B9O16 and the commercial phosphor Zn2SiO4:Mn2+, the optimum phosphor Ba0.925Zn0.075Gd0.75Tb0.25B9O16 exhibited about 127% and 51% integrated emission intensity respectively and the shorter decay time of about 2.822 ms under 147 nm excitation.

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