Zr4+ Co-Dopant Enhancing Afterglow Green Phosphor of Zn2SiO4: Mn2+

Bi Sang Chen; Li Fang Chen; Hua Lin; Guo Liang Chen; Zi Shan Zheng; Heng Lin; Hong Xu Guo; Zhong Hui Chen; Ling Feng Huang; Wen Hua Zhou

doi:10.4028/www.scientific.net/AMR.393-395.503

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 393-395Zr4+ Co-Dopant Enhancing Afterglow Green Phosphor...

Zr⁴⁺ Co-Dopant Enhancing Afterglow Green Phosphor of Zn₂SiO₄: Mn²⁺

Abstract:

A new afterglow green phosphor of Zn₂SiO₄: Mn²⁺, Zr⁴⁺ was prepared by high temperature solid-state method. Effects of various preparation techniques on the crystal characteristics, luminescent properties and afterglow performance have been investigated systematically. The phosphor powders were further investigated by photoluminescence excitation and emission spectra (PL) and brightness meter. The results showed that the PL of Zn₂SiO₄: Mn²⁺, Zr⁴⁺was observed in the green region due to transitions from the ⁴T_1g(G) to the ⁵A_1g(S) configuration of the Mn²⁺ ions. This phosphor showed obvious long-lasting phosphorescence that could be clearly seen with naked eyes in a dark room for more than 2h after the irradiation source has been removed. The possible mechanism of this phosphor was also investigated based on the TL measurements.

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Advanced Materials Research (Volumes 393-395)

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503-506

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.393-395.503

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Online since:

November 2011

Authors:

Bi Sang Chen, Li Fang Chen, Hua Lin, Guo Liang Chen, Zi Shan Zheng, Heng Lin, Hong Xu Guo, Zhong Hui Chen, Ling Feng Huang, Wen Hua Zhou

Keywords:

Long Afterglow, Mn²⁺, Phosphor, Zn₂SiO₄, Zr⁴⁺

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