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Synthesis, structure and luminescence properties of phosphor CaAl2O4 activated by Tb3+

CHANG-BAO FU1, HONG-JUN DONG2,* , CHENG-YOU LIU1, YAN-PING WANG1

Affiliation

  1. Department of Physics, Tong Hua Normal College, Tong Hua 134002, China
  2. Department of Chemistry, Bai Cheng Normal College, Bai Cheng 137000, China

Abstract

Series of green CaAl2O4:Tb3+ phosphors were first prepared by the Self-Propagating Combustion Synthesis (SPCS) methods. The unit cell of CaAl2O4:Tb3+ was confirmed monoclinic system with a space group P21/n by XRD analysis. Lattice constant refinement was a = 8.6831Å,b = 8.0728 Å,c = 15.1890 Å,β = 90.1647°, Z = 12. The completely precise peaks were observed in surprise from excitation and emission spectra. Rare excitation absorption of Tb3+ coming from 4f8→4f75d1 appeared in excitation spectra at 220-320nm. Emission spectra indicated that emission peaks were attributed to 5D4→7FJ (J = 6, 5, 4, 3, 2, 1, 0) at 500nm-700nm and 5D3→7FJ at 380nm-500nm. Vibration feature of products were investigated by FT-IR spectra. SEM revealed products had smooth surface, the better crystallization..

Keywords

SPCS, CaAl2O4:Tb3+, Pure products, Luminescence properties.

Citation

CHANG-BAO FU, HONG-JUN DONG, CHENG-YOU LIU, YAN-PING WANG, Synthesis, structure and luminescence properties of phosphor CaAl2O4 activated by Tb3+, Optoelectronics and Advanced Materials - Rapid Communications, 4, 1, January 2010, pp.73-76 (2010).

Submitted at: Dec. 2, 2009

Accepted at: Jan. 19, 2010