NDLI: Luminescent Characteristics and Synthesis of Sm 3+ -Doped CaWO 4 Phosphors

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Luminescent Characteristics and Synthesis of Sm 3+ -Doped CaWO 4 Phosphors

Content Provider	Semantic Scholar
Author	Ryu, Jong-Hang Yoon, So-Jin
Copyright Year	2014
Abstract	CaWO4:Smx(x = 0, 0.5, 1.0, 1.5, 2.0 mol%) white phosphors with different concentrations of Sm 3+ ions were synthesized using the hydrothermal method. The crystal structure, surface, and optical properties of the CaWO4:Sm phosphors were investigated using X-ray diffraction(XRD), field-emission scanning electron microscopy(FE-SEM), photoluminescence(PL) and photoluminescence excitation(PLE). From the XRD results, the crystal structure of the CaWO4:Sm phosphors was found to be tetragonal. The CaWO4:Sm phosphors became more cohesive with increasing Sm 3+ion concentration. The photoluminescence excitation(PLE) peak of the phosphors, at around 250 nm, was ascribed to the transition from the 1A1 ground-state to the high-vibration level of 1T2 in the WO4 2− complex. The maximum emission spectra of the phosphors were observed when the Sm3+ concentration was 0.5 mol%. The luminescence intensity of the CaWO4 phosphors was decreased for Sm 3+ concentrations greater than 0.5 mol%.
Starting Page	339
Ending Page	343
Page Count	5
File Format	PDF HTM / HTML
DOI	10.3740/MRSK.2014.24.7.339
Volume Number	24
Alternate Webpage(s)	http://ocean.kisti.re.kr/downfile/volume/mrsk/GJRHBQ/2014/v24n7/GJRHBQ_2014_v24n7_339.pdf
Alternate Webpage(s)	https://doi.org/10.3740/MRSK.2014.24.7.339
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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