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HomeMaterials Science ForumMaterials Science Forum Vol. 888XRD and Photoluminescence Properties of CaSO4:Dy...

XRD and Photoluminescence Properties of CaSO₄:Dy Phosphor Synthesized by New Co-Precipitation Method

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Abstract:

This paper presents the luminescence properties of dysprosium (Dy) doped calcium sulfate (CaSO₄) phosphor material produced by co-precipitation technique with 0.1 - 0.5 mol% concentration of dopant. The crystallinity of the produced powder was studied using x-ray powder diffraction (XRD). The XRD spectrum shows high purity anhydrite CaSO₄ phosphor material produced. The average crystallite size of 74 nm with orthorhombic crystal system was obtained. The luminescence behavior of produced CaSO₄: Dy was studied using a photoluminescence (PL) spectrometer. The excitation and emission spectrum peaks associated with defects and vacancies of the phosphor material at claimed crystalline phase. The mixed peaks of excitation and emission that corresponds to micro and nano sized particle was shown for the produced powders. These properties show that the produced powders have wide range of luminescence detection with many electron traps ready for thermoluminescence (TL) information storage.

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Periodical:

Materials Science Forum (Volume 888)

Pages:

333-337

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.888.333

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Online since:

March 2017

Authors:

Nadira Kamarudin*, Wan Saffiey Wan Abdullah, Muhammad Azmi Abdul Hamid

Keywords:

Co-Precipitation Technique, Crystal Structure, Photoluminescence

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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