Luminescence Properties of(Y,Gd)Al3(BO3)4∶Eu3+ under VUV excitation
来源期刊：JOURNAL OF RARE EARTHS2004年第1期
论文作者：何大伟 刘端阳 李少霞 康凯 李春棠
Key words：optics; (Y,Gd)Al3(BO3)4∶Eu3+; chromaticity coordinate; VUV; concentration quenching; rare earths;
Abstract: (Y, Gd)Al3(BO3)4∶Eu3+ samples were prepared by the conventional solid state reaction. The XRD results indicate that the crystal symmetry is low. The excitation spectrum is composed of two broad bands centered at about 170 and 250 nm respectively. In the emission spectra, the peak wavelength is about 616 nm under 147 nm VUV excitation. The luminescent chromaticity coordinate and the relative intensity change along with Gd3+ mole concentration in the range of 0.15 to 0.85 mol(and Eu3+ mole concentration, 0.02 to 0.1 mol). The correlative data show that the concentration quenching occurs when the Eu3+ mole concentration ranges from 0.02 to 0.1 mol, and the Gd3+→Gd3+, Gd3+→Eu3+ and host→Eu3+, Gd3+ energy transfers exist, and Gd3+ mole concentration influences Eu3+ emission.
何大伟1，刘端阳1，李少霞1，康凯1，李春棠1
(1.Ministry of Education Key Laboratory of Materials for Information Storage and Display, Institute of Photoelectron Technology, Beijing Jiao Tong University, Beijing 100044, China)
Abstract:(Y, Gd)Al3(BO3)4∶Eu3+ samples were prepared by the conventional solid state reaction. The XRD results indicate that the crystal symmetry is low. The excitation spectrum is composed of two broad bands centered at about 170 and 250 nm respectively. In the emission spectra, the peak wavelength is about 616 nm under 147 nm VUV excitation. The luminescent chromaticity coordinate and the relative intensity change along with Gd3+ mole concentration in the range of 0.15 to 0.85 mol(and Eu3+ mole concentration, 0.02 to 0.1 mol). The correlative data show that the concentration quenching occurs when the Eu3+ mole concentration ranges from 0.02 to 0.1 mol, and the Gd3+→Gd3+, Gd3+→Eu3+ and host→Eu3+, Gd3+ energy transfers exist, and Gd3+ mole concentration influences Eu3+ emission.
Key words:optics; (Y,Gd)Al3(BO3)4∶Eu3+; chromaticity coordinate; VUV; concentration quenching; rare earths;
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