Photoluminescence Properties of Sulfur-Doped Sr3SiO5: Eu2+ Phosphor for White LEDs

Zhi Qiang Wang; Jun Jie Liao; Qian Zhao; Hai Lin; Shu Wen Jiang

doi:10.4028/www.scientific.net/AMR.634-638.2498

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Photoluminescence Properties of Sulfur-Doped...

Photoluminescence Properties of Sulfur-Doped Sr₃SiO₅: Eu²⁺ Phosphor for White LEDs

Abstract:

A novel S-doped Sr₃SiO₅: Eu²⁺ phosphor was synthesized employing high temperature solid-state reaction method under reductive atmosphere environment. The crystal structure and photoluminescence properties of the phosphor, and the effect of S^2- doping concentration on the photoluminescence intensity of Eu²⁺ was studied in details. The results show that the crystal structure of Sr₃SiO₅: Eu²⁺is not changed upon S^2- doping. When the doping concentration of S^2- is 1 wt%, the phosphor shows the maximum emission intensity, which is higher than that of Sr₃SiO₅: Eu²⁺ without S^2-. Moreover, the addition of S^2- results in an slightly shift of its emission spectra towards the red region, indicating that the S-doped Sr₃SiO₅: Eu²⁺ is an excellent yellow-orange phosphor for warm white LEDs.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

2498-2501

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.2498

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Online since:

January 2013

Authors:

Zhi Qiang Wang, Jun Jie Liao, Qian Zhao, Hai Lin, Shu Wen Jiang

Keywords:

Doping, Phosphor, Photoluminescence (PL), Sr₃SiO₅: Eu²⁺, Warm White LED

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