Luminescence of Sr2MgSi2O7 Phosphor Prepared by Solid State Reaction

Swee Yong Pung; Chuan Hwai Tan; Mohd Noor Ahmad Fauzi; Shah Rizal Kasim

doi:10.4028/www.scientific.net/AMR.1024.344

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1024Luminescence of Sr2MgSi2O7 Phosphor Prepared by...

Luminescence of Sr₂MgSi₂O₇ Phosphor Prepared by Solid State Reaction

Abstract:

Blue phosphor Sr₂MgSi₂O₇:Eu, Dy (SMS) has been widely used in the applications of painting, watches, clock displays and emergency signboards due to its long afterglow property, long term chemical and physical stability. In this work, solid state reaction method was used in the synthesis of SMS phosphor. The reductive atmosphere was generated by combustion of the raw materials in a graphite crucible. This approach was less costly as compared to the conventional solid state reaction which uses a mixture of hydrogen and nitrogen gas. The PL measurement shows a blue emission at wavelength of 466 nm when excite the SMS phosphor with Xenon lamp at wavelength of 325nm. This emission was attributed to Eu²⁺ subshells 4f⁶5d¹ to 4f⁷transition. In addition, the strongest PL emission was obtained with the excitation source of 428 nm. X-ray diffraction analysis shows that SMS phosphor consist of tetragonal structure of Sr₂MgSi₂O₇ and monoclinic structure α-SrSiO₃.

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Periodical:

Advanced Materials Research (Volume 1024)

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344-347

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1024.344

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Online since:

August 2014

Authors:

Swee Yong Pung*, Chuan Hwai Tan, Mohd Noor Ahmad Fauzi, Shah Rizal Kasim

Keywords:

Phosphor, Photoluminescence (PL), Solid-State Reaction

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