溶胶-凝胶法制备纳米荧光粉Y4Al2O9: Eu3+的初步研究

袁曦明; 许永胜; 于江波; 田熙科

Volume 27 Issue 4

Jul. 2002

Turn off MathJax

Article Contents

Article Navigation > Earth Science > 2002 > 27(4): 409-412

YUAN Xi-ming, XU Yong-sheng, YU Jiang-bo, TIAN Xi-ke, 2002. Sol-Gel Synthesis Used to Prepare Nano Fluorescent Powders Y4Al2O9: Eu3+. Earth Science, 27(4): 409-412.

Citation:

YUAN Xi-ming, XU Yong-sheng, YU Jiang-bo, TIAN Xi-ke, 2002. Sol-Gel Synthesis Used to Prepare Nano Fluorescent Powders Y₄Al₂O₉: Eu³⁺. Earth Science, 27(4): 409-412.

YUAN Xi-ming, XU Yong-sheng, YU Jiang-bo, TIAN Xi-ke, 2002. Sol-Gel Synthesis Used to Prepare Nano Fluorescent Powders Y4Al2O9: Eu3+. Earth Science, 27(4): 409-412.

Citation:

YUAN Xi-ming, XU Yong-sheng, YU Jiang-bo, TIAN Xi-ke, 2002. Sol-Gel Synthesis Used to Prepare Nano Fluorescent Powders Y₄Al₂O₉: Eu³⁺. Earth Science, 27(4): 409-412.

PDF( 152 KB)

Sol-Gel Synthesis Used to Prepare Nano Fluorescent Powders Y₄Al₂O₉: Eu³⁺

YUAN Xi-ming^{1, 2},
XU Yong-sheng³,
YU Jiang-bo^{1, 2},
TIAN Xi-ke^{1, 2}

1.
Testing Center, China University of Geosciences, Wuhan 430074, China
2.
Institute of Nano Materials, China University of Geosciences, Wuhan 430074, China
3.
Engineering Faculty, China University of Geosciences, Wuhan 430074, China

Received Date: 2001-11-13
Publish Date: 2002-07-25

Abstract

Abstract

Nano fluorescent powder of Y₄Al₂ O₉: Eu³⁺ is synthesized by sol gel method. The XRD shows that the production prepared at 900 ℃ is pure phase Y₄Al₂ O₉: Eu³⁺. Y₄Al₂ O₉ powder is a nano crystal testified by BF and ED analyses of TEM. The grain diameter of Y₄Al₂ O₉ ranges from 20 to 50 nm, averaged at 30 nm. The luminescent spectra show that Eu³⁺ ions occupy two kinds of sites in Y₄Al₂ O₉ crystal lattice, one in the strict inversion center, and the other in off lying inversion center. When excited with UV light (λ =254 nm), Y₄Al₂ O₉: Eu³⁺ exhibits the orange emission band at λ =590 nm due to the ⁵D₀→ ⁷F₁ transition and the red emission band at λ =610 nm due to the ⁵D₀→ ⁷F₂ transition.
- rare earth,
- sol gel method,
- nano,
- fluorescent powder,
- synthesis,
- luminescence

FullText(HTML)

References(8)

References

[1]	于江波, 袁曦明, 陈敬忠. 纳米发光材料的研究现状及进展[J]. 材料导报, 2001, 15(1) : 30-33. doi: 10.3321/j.issn:1005-023X.2001.01.011 YU J B, YUA N X M, CHEN J Z. Present status and progress in study of nano luminescent materials[J]. Materials Review, 2001, 15(1) : 30 -33. doi: 10.3321/j.issn:1005-023X.2001.01.011
[2]	Palilla F C, Levine A K, Tomkus M R. Fluorescence properties of alkaline ear th aluminates of the type M Al2O 4 activated by divalent europium[J]. J Electrochem Soc, 1968, 115(6) : 642 -644. doi: 10.1149/1.2411379
[3]	Katusmata T, Nabae T, Sasajima K, et al. Effects of composition on the long phosphorescent SrAl₂O₄: Eu²⁺, Dy³⁺ pho sphor cry stals[J]. J Electrochem Soc, 1997, 144(9) : 243 -245. doi: 10.1149/1.1837931
[4]	Nakazawa E, Mcchida T. Traps in SrAl₂O₄: Eu²⁺ phosphor with rare-eath ion doping[J]. Journal of Luminescence, 1997, 72 -74 : 236-237. doi: 10.1016/S0022-2313(97)00043-4
[5]	Kanemitsu Y, Tanaka H, Mimura S, e t al. Photo luminescence from Ga As nanocrystals by selective ex citation [J]. Journal of Luminescence, 1999, 83 - 84 : 301-304. doi: 10.1016/S0022-2313(99)00115-5
[6]	Tanaka M, Qi J F, Masumoto Y. Optical properties of undoped and Mn²⁺-doped CdS nanocry stals in ploymer[J]. Journal o f Crystal G row th, 2000, 214~ 215 : 410 -414.
[7]	SUN L D, YAN C H, LIU C H. Study of the optical properties of Eu³⁺-doped Z nS nanocrystals[J]. Jour nal of Alloy s and Compounds, 1998, 275: 234.
[8]	Babin V, Fabeni P. Polarized luminescence of CsPbBr3 nanocrystals (quantum do ts) in CsBr: Pb single crystal[J]. Chemical Phy sics Letters, 1999, 314 : 31. doi: 10.1016/S0009-2614(99)01110-0