Enhancement of photoluminescence properties of CaAl2Si2O8:Eu2+ by SiO2 addition

Kim, B.S.; Song, Young Hoon; Jo, Deok Su; Abe, Takeshi; Senthil, Kalaiselvi; Takeuchi, Masaki; Toda, Kenji; Yoon, Dae Ho

doi:10.1016/j.materresbull.2012.04.109

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Recently, lots of luminescence study has been reported on SrAl 2 Si 2 O 8 :Eu 2 + ,SiO 2 ‐SrAl 2 Si 2 O 8 :Eu 2 + , SrAl 2 Si 2 O 8 :Eu 3 + /Dy 3 + applying different synthesis process. So far no reports have been available,we have undertaken the present work on SrGa 2 Si 2 O 8 :Dy 3 + ,Tm 3 + phosphor, inorder to study structural and luminescence properties of Dy 3 + ,Tm 3 + ions activated SrGa 2 Si 2 O 8 phosphors.…”

Section: Introductionmentioning

confidence: 99%

Luminescence analysis of SrGa₂Si₂O₈: RE³⁺ (RE = Dy, Tm) phosphors

Kadukar

Dhoble

Sahu³

et al. 2016

Luminescence

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Section: Introductionmentioning

confidence: 99%

Luminescence analysis of SrGa₂Si₂O₈: RE³⁺ (RE = Dy, Tm) phosphors

Kadukar

Dhoble

Sahu³

et al. 2016

Luminescence

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“…Actually, the emission bands are possible due to the allowed character of the 5d → 4f transitions, and also to the existence of 460 nm of alkaline earth sites available for the activator. Although Eu 2+ can occupy into the interstitial site in SiO 2 crystal [23]. Therefore, the overlapped 460nm and 505nm are due to different Eu 2+ site in CaAl 2 Si 2 O 8 and this make different environment to Eu 2+ .…”

Section: Introductionmentioning

confidence: 99%

Luminescent Characteristics of Blue Phosphor CaAl₂Si₂O₈:Eu²⁺in White LED Applications by Solid State Method

2016

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Abstract. Using the solid state reaction method, we synthesize the Ca0.88Al2Si2O8:Eu 2+ 0.12 phosphor powders at different sintering temperatures ranging from 1100 to 1500 o C. From XRay diffraction patterns, we confirmed that all the samples acquired mixed CaAl2Si2O8 (triclinic), CaAlO4 (Monoclinic) and SiO8 (Hexagonal) phases. For the Ca0.88Al2Si2O8:Eu 2+ 0.12 phosphors, the excitation spectra exhibited an unresolved broad band in the range from 200 to 420 nm and maximum intensity at 350 nm. The emission spectra of CaAl2Si2O8:Eu 2+ show broad band ranging from 400 to 560 nm and maximum wavelength is found to be at around 440nm, which can be ascribed to the electric-dipole-allowed 4f 6 5d 1 -8 S7/2(4f 7 ) transition of the Eu 2+ ions. The Commission International De I-Eclairage 1931 (CIE 1931) chromaticity coordinates for Ca0.88Al2Si2O8:Eu 2+ 0.12 phosphors are calculated and represented at (0.168, 0.144).

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