Synthesis and Luminescence Properties of Tb3+ Doped BaZrO3 Powders

doi:10.15541/jim20150279

Abstract

Abstract:

Tb³⁺doped BaZrO₃ powders at different Tb³⁺ concentrations were synthesized by hydrothermal method. The structure, morphology and luminescence properties of the synthesized materials were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrum (FTIR) and fluorescence spectrometer, respectively. Parts of hydrothermal products were calcinated to study the effect of temperature on luminescence properties. Analysis results showed that Tb was successfully introduced into the lattice and replaced Zr at B site of perovskite. It was remarkable that all the samples had similar morphology, which was composed of evenly distributed spheres. The broadband emission peaks of the host and the typical emission peaks of Tb³⁺ were observed in the BaZrO₃ doped with Tb³⁺under 244 nm excitation, and these peaks reach the maximum at Tb³⁺ ion content of 5mol%. Temperature had significant influence on their photoluminescence properties. With the calcination temperature increase, the luminescent intensity of Tb³⁺ doped samples was decreased.

Key words: barium zirconate, Tb-doped, optical properties, quenching

CLC Number:

TB321

YANG Yu-Jia, WANG Jing, HE Hui-Fen. Synthesis and Luminescence Properties of Tb³⁺ Doped BaZrO₃ Powders[J]. Journal of Inorganic Materials, 2016, 31(1): 27-33.

Figures/Tables 11

Fig. 1 XRD patterns of BaTbxZr1-xO3 samples (Ⅰ) and magnified diffraction peak of (200) crystals face (Ⅱ)

Table 1 Lattice parameters of BaTbxZr1-xO3 samples with different concentrations

Tb³⁺ion content/mol%	0	1	3	5	6
Lattice parameter, a/nm	0.420171	0.420645	0.420840	0.421319	0.421313

Fig. 2 XRD patterns of BaTb0.05Zr0.95O3 samples (Ⅰ) and magnified diffraction peak of (200) crystals face (Ⅱ)

Table 2 Lattice parameters of BaTb0.05Zr0.95O3 samples calcined at different temperatures

Calcination temperature /℃	Room temperature	300	500	700	1000
Lattice parameter, a/nm	0.421319	0.420105	0.418911	0.418974	0.419034

Fig. 3 SEM images of samples of (a)~(e) assigned to BaTbxZr1-xO3 (x=0, 0.01, 0.03, 0.05, 0.06), respectively

Fig. 4 SEM images of BaTb0.05Zr0.95O3 samples calcined at 300 ℃(a), 500 ℃(b), 700 ℃(c) and 1000 ℃(d), respectively

Fig. 5 FT-IR spectra of BaTbxZr1-xO3 samples (a-f assigned to 0, 1mol%, 3mol%, 4mol%, 5mol% and 6mol%, respectively)

Fig. 6 FT-IR spectra of BaTb0.05Zr0.95O3 samples calcined at different temperatures (a-e) assigned to room temperature, 300 ℃, 500 ℃, 700 ℃ and 1000 ℃, respectively

Fig. 7 Excitation spectra of BaTbxZr1-xO3 samples (λem=546 nm) (a) BaZrO3; (b) BaTb0.03Zr0.97O3

Fig. 8 Emission spectra of BaTbxZr1-xO3 samples (λex=244 nm) (Ⅰ) and the relationship point diagram of Tb3+ doping amounts and emission intensity of 546 nm (Ⅱ)

Fig. 9 Emission spectra of BaTb0.05Zr0.95O3 samples calcined at different temperatures (λex=244 nm)

References 22

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Synthesis and Luminescence Properties of Tb³⁺ Doped BaZrO₃ Powders

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