The Preparation of CaO:Dy³⁺, Na⁺ Rare Phosphor by High Sofid-State Method

Abstract:

The CaO:xDy³⁺, yNa⁺ phosphors, were synthesized by high solidstate method, and the starting materials are CaCO₃Na₂CO₃ and Dy₂O₃. The effects of the Dy³⁺,Na⁺doping concentration on luminescent properties were studied by TG/DSC,XRD and PL spectra.The results indicated that when the sinter temperature of precursors over 950 °C,the main phase of the phosphor is CaO, and when x=0.02,y=0.15 we obtained the best luminescent properties of CaO:xDy³⁺, yNa⁺phosphors;Na⁺effectively enhances the luminescent properties of phosphors;The maximum emission wavelength is about 480 nm (blue),corresponding to ⁴F_{9 /2}⁶H_{15 /2} of Dy³⁺; There are a series of spectral lines in the 240-420 nm range of excitation spectrum,and the strong excitation peak located at 360 and 375 nm.

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 599-602
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.599
• Online since: September 2013
• Authors: Su Zhao, Yan Jun Guo, Qian Wang, Xiao Lei Li
• Keywords: CaO:Dy³⁺,Na⁺, High Solid-Stated Method, Phosphor

References

[1] Nakazawa E, Yamamoto H. Trapping mechanism in the afterglow process of the rare-earth activated Y2O2S phosphors［J］. Journalof Luminescence, 2008, 128: 494-498.

DOI: 10.1016/j.jlumin.2007.09.024

[2] Guohua Chen: Rare Earth Ion Activation Long Afterglow Luminescence Materials is reviewed. Optical Technology, vol. 32(supplement) (2006), pp.42-49.

[3] Zeng H H, Zhou X M, Zhang L, et al. Synthesis and luminescence properties of a novel red long lasting phosphor Y2O2S: Eu3+, Si4+, Zn2+[J]. Journal of Alloys and Compounds, 2008, 460: 704-707.

DOI: 10.1016/j.jallcom.2007.06.073

[4] Kaiming Lv, Yingrong Jin, Yongbo Yin, et a1. Sr2Al6O11: Eu2+, Dy3+ blue glowing materials [j]. Xihua University Journal, 2010, 29 (3): 95-96, 100.

[5] Je∞g J H, Yallg H K, Shim K S, et a1. Li doping effect on the luminescent characteristics 0f YVO4: Eu3+ thin flims grown by pulsed laser deposition[J]．Appued Surface Sei-ence, 2007, 253: 8273—8277.

DOI: 10.1016/j.apsusc.2007.02.114

[6] Xibin Yu, Xiaolin Xu, Chunlei Zhou. Synthesis and lumiIlescent properlies 0f SrZnO2: Eu3+, M+(M=Li, Na, K)phosphor[J]．Materials Reserach Bulletin, 2006, 41: 1578—1583.

DOI: 10.1016/j.materresbull.2006.02.001

[7] Ming Kang, Kenan Xie, Zongyuan Lu. The preparation of nanometer ZnO: Eu, Li red fluorescent material by sol-gel[J]. Sichuan University: Engineering Science Edition, 2005, 37 (1): 65 68.

[8] Jie Liu, Hongzhou Lian, Chunshan Shi．Improvod optical photolumineseence by charge compensation in the phosphor system CaMoO4: Eu3+[J]．optical Materials, 2007, 29: 1591—1594.

DOI: 10.1016/j.optmat.2006.06.021