Synthesis of High Brightness Red Long Persistent Phosphor (Sr 1-X Ca X)S: Eu, Dy by Sol-Gel Thermolysis Method

Xiao Bao Han; Yu Zhi Feng; Gui Hua Peng; Zhen Hua Liang; Xia Wang

doi:10.4028/www.scientific.net/AMR.652-654.581

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654Synthesis of High Brightness Red Long Persistent...

Synthesis of High Brightness Red Long Persistent Phosphor (Sr _1-X Ca _X)S: Eu, Dy by Sol-Gel Thermolysis Method

Abstract:

The red long persistent phosphors (Sr _1-x Ca _x) S: Eu ²⁺ , Dy 3+ (0≤x≤0.4) were prepared by sol-gel thermolysis method under reducing atmosphere. The results of XRD indi^{Superscript text}cated that the phosphor of the major phase was SrS (0≤x≤0.4) and the diffraction peak positions shift to higher angles with increase in x. The spectral properties are measured, and it found that the emission wavelength and decay properties of the phosphor varied with x. With increasing x, the luminescence intensity increased at beginning ,then decreased, and at x=0.3, the initial brightness and the afterglow time of the phosphor became maximal.

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Advanced Materials Research (Volumes 652-654)

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581-584

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.581

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Online since:

January 2013

Authors:

Xiao Bao Han, Yu Zhi Feng, Gui Hua Peng, Zhen Hua Liang, Xia Wang

Keywords:

(Sr _1-X Ca _x) S: Eu ²⁺ , Dy ³⁺, Phosphor, Red Long Persistent, Sol-Gel Thermolysis

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