Blue-emitting long-afterglow photoluminescence phosphor

Zhiping Yang; Shengchao Zhu; Zhi Guo; Wenjie Wang; Zheng Liu

doi:10.1117/12.483107

17 September 2002 Blue-emitting long-afterglow photoluminescence phosphor

Zhiping Yang, Shengchao Zhu, Zhi Guo, Wenjie Wang, Zheng Liu

Proceedings Volume 4918, Materials, Devices, and Systems for Display and Lighting; (2002) https://doi.org/10.1117/12.483107
Event: Photonics Asia, 2002, Shanghai, China

Abstract

By changing the ratio of Al:Sr, we get a new type phosphor SeAl₃O₅(OH):Eu²⁺,Dy³⁺ emitting blue light with the afterglow characteristics of over 10 hours. The emitting peak is at 484nm, which is corresponding to the spectral transition 4f5d of Eu²⁺. The influence of different temperatures and different fluex on the luminescent properties of SrAl₃O₅(OH):Eu²⁺,Dy³⁺ was studied. The results indicate that increasing the sintering temperature helps crystal to grow, and that the luminescent properties of SrAl₃O₅(OH):Eu²⁺,Dy³⁺ is improved by higher temperature or the flux especially H₃BO₃, which increases the initial brightness and prolongs the afterglow time comparing with the SrAl₃O₅(OH):Eu²⁺,Dy³⁺ that without additives.

Citation Download Citation

Zhiping Yang, Shengchao Zhu, Zhi Guo, Wenjie Wang, and Zheng Liu "Blue-emitting long-afterglow photoluminescence phosphor", Proc. SPIE 4918, Materials, Devices, and Systems for Display and Lighting, (17 September 2002); https://doi.org/10.1117/12.483107

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