Photoluminescence properties of Y0.75-xGdxAl0.10BO3:Eu3+0.10, 0.05R3+ (R = Sc, Bi) (0.00≤x≤0.45)

doi:10.1088/1674-1056/19/6/063301

Abstract Y$_{0.75 - x}$Gd_xAl_0.10BO₃:Eu$^{3+}_{0.10}$, 0.05R³⁺ (R = Sc, Bi) (0.00 ≤ x ≤ 0.45) powder samples are prepared by solid-state reaction and their luminescence properties are investigated. With the replacement of Y³⁺ ions by Sc³⁺ (or Bi³⁺) and Gd³⁺ ions in (Y, Al)BO₃:Eu, the intensities of emission at 254 and 147~nm are remarkably improved, because Sc³⁺ ions can absorb UV light and transfer the energy to Eu³⁺ ions efficiently. Moreover, Gd³⁺ and Bi³⁺ ions act as an intermediate ``bridge'' between the sensitizer and the activator (Eu³⁺) in energy transfer to produce light in the (Y, Gd)BO₃:Bi³⁺, Eu³⁺ system more effectively. After doping an appropriate concentration of Gd³⁺ into Y$_{0.50}$Gd$_{0.25}$Al_0.10BO₃:Eu$^{3+}_{0.01}$, Bi$^{3+}_{0.05}$, the emission intensity reaches its maximum, which is nearly 110{\%} compared with the red commercial phosphor (Y,Gd)BO₃:Eu and better chromaticity coordinates (0.650, 0.350) are obtained.

Keywords: Sc³⁺ Bi³⁺ Gd³⁺ luminescence intensity chromaticity

Received: 11 September 2009
Accepted manuscript online:

PACS:	78.55.Hx	(Other solid inorganic materials)
	81.20.Ev	(Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)
	61.72.S-	(Impurities in crystals)

Fund: Project supported by the National Natural Science Foundation of China (Grant No.~10874061), the Doctoral Program Foundation of Institutions of Higher Education of China (Grant No.~20040730019), and the Project of the Combination of Industry and Research b

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Li Jie(李杰), Wang Yu-Hua(王育华), Dong Qi-Zheng(董其铮), and Liu Ji-Di(刘吉地) Photoluminescence properties of Y_0.75-xGd_xAl_0.10BO₃:Eu³⁺_0.10, 0.05R³⁺ (R = Sc, Bi) (0.00≤x≤0.45) 2010 Chin. Phys. B 19 063301

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Photoluminescence properties of Y0.75-xGdxAl0.10BO3:Eu3+0.10, 0.05R3+ (R = Sc, Bi) (0.00≤x≤0.45)

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Photoluminescence properties of Y_0.75-xGd_xAl_0.10BO₃:Eu³⁺_0.10, 0.05R³⁺ (R = Sc, Bi) (0.00≤x≤0.45)