Photoluminescent properties and energy transfer mechanism of Tb3+-Ce3+ doped CaSi2O2N2 oxynitride phosphors

被引：9

作者：

Zou, Yingxuan ^{[1
]}

Min, Xiao ^{[1
]}

Liu, Zongjian ^{[2
]}

Yu, Lixin ^{[1
]}

Liu, Bingfa ^{[1
]}

机构：

[1] Nanchang Univ, Coll Mat Sci & Engn, 999 Xuefu Rd, Nanchang 330031, Jiangxi, Peoples R China

[2] Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 320014, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2020年 / 124卷

关键词：

Oxynitride; Photoluminescent; Energy transfer; Phosphors; LUMINESCENCE PROPERTIES; TUNABLE LUMINESCENCE; TB3+; CE3+; EU2+; NITRIDE; EMISSION; MN2+;

D O I：

10.1016/j.materresbull.2020.110769

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Ce3+-Tb3+ doped CaSi2O2N2 phosphors are successfully obtained via conventional solid-state reaction at normal pressure. Broad absorption bands from Ce3+ are clearly observed in the excitation spectra of CaSi2O2N2:Tb3+, Ce3+. The emission spectra present a combination of Tb3+ and Ce3+ emission bands, and the emission intensity of Ce3+ is decreased along with the enhancement of the emission intensity of Tb3+. The energy transfer from Ce3+ to Tb3+ in the CaSi2O2N2 host is confirmed to be resonant type via a dipole dipole interaction mechanism. It is also found that the luminescence intensity of the Tb3+-Ce3+ doped CaSi2O2N2 phosphors prepared in N-2/H-2 atmosphere is stronger than that prepared in pure N-2.

引用

页数：8

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