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KMID : 1151820210150030391
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Journal of the Korean Society of Radiology
2021 Volume.15 No. 3 p.391 ~ p.399
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Temperature Dependent Optical Performance of the NaSr(PO₃)₃:Eu²+ Blue Phosphors
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Yoon Chang-Yong
Lee Sang-Ho
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Abstract
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Eu²+ doped polyphosphate NaSr(PO₃)₃ blue-emitting phosphors were synthesized by the conventional solid state method in a reductive atmosphere. The phase formation of NaSr(PO₃)₃ phosphors were characterized by using the X-ray powder diffraction (XRD) measurement. The photoluminescence emission and excitation spectra of the NaSr(PO₃)₃:Eu²+ phosphor, and decay curves were measured. Under the near-UV excitation, the phosphor exhibits a band emission around 420 nm assigned to the 4f65d→f7(8S7/2) transition of Eu²+. The temperature dependent emission spectra and decay curves were measured to elevate the thermal properties of the Eu²+ doped phosphors. The as-prepared NaSr(PO₃)₃:Eu²+ phosphors show a strong temperature dependent performance, which can serve as a promising temperature sensor.
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KEYWORD
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NaSr(PO3)3, Eu2+, Temperature dependent
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