Study on the luminescent properties of Tb3+ doped pyrosilicate phosphor

Li Guan; Guoqi Jia; Wenhao Chen; Litao Jin; Xu Li; Zhiping Yang; Qinglin Guo; Guangsheng Fu

doi:10.1117/12.871780

15 November 2010 Study on the luminescent properties of Tb³⁺ doped pyrosilicate phosphor

Li Guan, Guoqi Jia, Wenhao Chen, Litao Jin, Xu Li, Zhiping Yang, Qinglin Guo, Guangsheng Fu

Proceedings Volume 7852, LED and Display Technologies; 78521J (2010) https://doi.org/10.1117/12.871780
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The Y₂Si₂O₇:Tb³⁺ phosphor was synthesized by high temperature solid state method. The crystal structure and luminescent properties of phosphors were studied by XRD pattern, excitation and emission spectra in this paper. XRD pattern showed that the sample was single phase Y₂Si₂O₇ crystal and the crystal lattice constants a=0.806nm, b=0.934 nm, and c=0.692 nm. The excitation spectrum is composed of a broad band centered 290nm and three narrow bands corresponding to 4ƒ - 4ƒ transition of Tb³⁺ centered 378 nm, 400nm and 420nm, respectively. The emission peaks of phosphor were located at 487nm, 546nm, 584nm and 623nm, which were corresponding to ⁵D₄-⁷F₆, ⁵D₄-⁷F₅, ⁵D₄-⁷F₄ and ⁵D₄-⁷F₃, respectively. The influences of Tb³⁺ concentration on the luminescent intensity of Y₂Si₂O₇:Tb³⁺ phosphor was studied. The results indicated that this phosphor could act as a candidate green phosphor for UV-excited white LED.

Citation Download Citation

Li Guan, Guoqi Jia, Wenhao Chen, Litao Jin, Xu Li, Zhiping Yang, Qinglin Guo, and Guangsheng Fu "Study on the luminescent properties of Tb³⁺ doped pyrosilicate phosphor", Proc. SPIE 7852, LED and Display Technologies, 78521J (15 November 2010); https://doi.org/10.1117/12.871780

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