Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (03): 685-690.doi: 10.3866/PKU.WHXB20100234

• PHOTOCHEMISTRY AND SPECTROSCOPY • Previous Articles     Next Articles

Preparation, Structure and Photoluminescence of Er3+ and Ce3+/Ce4+ Doped β-BaB2O4 Nanorods

HE Gui-Ping, ZHANG Jiang, YAO Ruo-He   

  1. Department of Physics, School of Science, South China University of Technology, Guangzhou 510641, P. R. China; 2School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, P. R. China
  • Received:2009-10-13 Revised:2009-12-07 Published:2010-03-03
  • Contact: ZHANG Jiang E-mail:jonney@scut.edu.cn

Abstract:

β-BaB2O4 (β-BBO) nanorods, rare earth ion Er3+ doped (β-BBO:Er3+) and Er3+, Ce3+/Ce4+ co-doped (β-BBO:Er3+/Ce3+/Ce4+) nanorods were synthesized by the cetyltrimethylammoniumbromide (CTAB) assisted hydrothermal method using Ba(NO3)2, NaBH4, Er2O3, and CeO2 as raw materials. The as-prepared products were studied by X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), and photoluminescence (PL) spectroscopy. Results indicate that the structure of the β-BBO nanorods doped with Er3+, Ce3+/Ce4+ was unchanged. The obtained nanorods have uniformdiameters of 10-20 nmand lengths of 200-500 nm. Upon excitation with 400 nm light, the doped β-BBO nanorods exhibit a strong green light emission. PL spectra indicate that the emission bands at 515 and 542 nm correspond to the 2H11/2→4I15/2 and 4S3/2→4I15/2 transitions of Er3+, respectively. In the samples, the cerium dopant exists as Ce3+ and Ce4+. Ce3+ sensitizes Er3+ and enhances the luminescence intensity of the doped nanorods remarkably and energy transfer fromCe3+→Er3+ was observed.

Key words: Photoluminescence, β-BaB2O4, Nanorods, Rare earth ion, Doping

MSC2000: 

  • O649