Photoluminescence and thermoluminescence of Ce3+ and Eu2+ in Ca2Al2SiO7 matrix

Wu, Haoyi; Hu, Yihua; Ju, Guifang; Chen, Li; Wang, Xiaojuan; Yang, Zhongfu

doi:10.1016/j.jlumin.2011.06.024

Cited by 58 publications

(23 citation statements)

References 23 publications

(28 reference statements)

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“…Equation (9) shows that impact time remains mostly unchanged with increasing impact velocity because there is no significant change in compression, which is expressed by 'x' in Eq. (9).…”

Section: Experimental Setup For Mechanoluminescence (Ml) Measurementmentioning

confidence: 99%

“…Equation (9) shows that impact time remains mostly unchanged with increasing impact velocity because there is no significant change in compression, which is expressed by 'x' in Eq. (9). This may be one possible reason why the time that corresponds to the peak ML intensity does not change significantly with increasing impact velocity [49].…”

Section: Experimental Setup For Mechanoluminescence (Ml) Measurementmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced luminescence performance of Sr2MgSi2O7:Eu2+ blue long persistence phosphor by co-doping with Ce3+ ions

Sahu

Bisen

Brahme

et al. 2015

J Mater Sci: Mater Electron

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A series of rare earth doped and co-doped distrontium magnesium di-silicate phosphors namely: Sr 2 MgSi 2 O 7 :Ce 3? , Sr 2 MgSi 2 O 7 :Eu 2? and Sr 2 MgSi 2 O 7 :Eu 2? , Ce 3? were prepared by the solid state reaction method. The crystal structures of sintered phosphors were an akermanite type structure which belongs to the tetragonal crystallography. The chemical compositions of sintered phosphors were confirmed by energy dispersive X-ray spectroscopy (EDS). Under the ultraviolet excitation, the emission spectra of both Sr 2 MgSi 2 O 7 :Eu 2? and Sr 2 MgSi 2 O 7 :Eu 2? , Ce 3? phosphors were composed of a broad band peaking at 460 nm, belonging to the broad emission band. When the Sr 2 MgSi 2 O 7 :Eu 2? phosphor is co-doped with Ce 3? ions, thermouminescence, photoluminescence, afterglow and mechanoluminescence (ML) intensity were strongly enhanced. The Sr 2 MgSi 2 O 7 :Eu 2? phosphor showed some afterglow with short persistence time. Ce 3? phosphors were proportionally increased with the increase of impact velocity, which suggests that these phosphors can be used as sensors to detect the stress of an object. Thus the present investigation indicates that the piezoelectricity is responsible to produce ML in prepared phosphors.

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“…Equation (9) shows that impact time remains mostly unchanged with increasing impact velocity because there is no significant change in compression, which is expressed by 'x' in Eq. (9).…”

Section: Experimental Setup For Mechanoluminescence (Ml) Measurementmentioning

confidence: 99%

Section: Experimental Setup For Mechanoluminescence (Ml) Measurementmentioning

confidence: 99%

Enhanced luminescence performance of Sr2MgSi2O7:Eu2+ blue long persistence phosphor by co-doping with Ce3+ ions

Sahu

Bisen

Brahme

et al. 2015

J Mater Sci: Mater Electron

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“…Silicates are an important class of phosphorescence material because of their high quantum efficiency in visible region, long persistence of phosphorescence, color purity, good stability and good thermal, chemical and radiation resistance [10,11]. The benefit of lanthanide ions as activators has now well established in the field of luminescence [12,13].…”

Section: Introductionmentioning

confidence: 99%

Enhanced long-persistence of Ca2Al2SiO7:Ce3+ phosphors for mechanoluminescence and thermoluminescence dosimetry

Tiwari

Brahme

Sharma

et al. 2016

J Mater Sci: Mater Electron

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Ca 2 Al 2 SiO 7 phosphors having various concentration of Ce 3? were synthesized by combustion-assisted method at initiating temperature of 600°C, using urea as a fuel and its XRD, SEM, TEM and EDX were studied. X-ray diffraction (XRD) pattern indicates that the crystal structure of Ca 2 Al 2 SiO 7 is mainly tetragonal and particle size of prepared phosphor was determined by TEM. Scanning electron microscope (SEM) image was recorded to observe the surface morphology. Mechanoluminescence (ML) and thermoluminescence (TL) properties of Ca 2 Al 2 SiO 7 :Ce 3? phosphors was also investigated. The TL intensity of Ca 2 Al 2 SiO 7 :Ce 3? was recorded for different exposure time of c-irradiation and it was observed that TL intensity is maximum for c dose of 1180 Gy. The increase in TL intensity indicates that the concentration of traps increases with c exposure time. The peak of ML intensity versus time curve increases linearly with increasing impact velocity of the moving piston. The ML intensity increases by increasing c irradiation time up to 1180 Gy. The ML and TL spectra of Ca 2 Al 2 SiO 7 :Ce 3? phosphor exhibits a sharp emission at 400 nm wavelength due to transition of Ce 3? ions. Mechanism of TL and ML excitation and suitability of Ca 2 Al 2 SiO 7 :Ce 3? phosphor for radiation dosimetry have been discussed.

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“…Rare-earth-doped melilite compounds like those that can be represented by the formula ABC 3 O 7 (where A, B, and C can be, respectively, Ca, Sr, or Ba; La or Gd; and Al or Ga) have been extensively investigated in the last few decades [1][2][3][4]. Kaczmarek et al [5] for example, reported the optical properties of Dy 3 þ , Pr 3 þ , and Nd 3 þ doped SrLaGa 3 O 7 single crystals, while Kaczkan and Malinowski [6] studied the spectroscopy properties of Ho 3 þ -doped SrLaGa 3 O 7 and SrLaGaO 4 crystals using non-resonant fluorescence line narrowing technique.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence properties of a new Eu2+-activated CaLaGa3S7 yellowish-green phosphor for white LED applications

et al. 2012

Journal of Luminescence

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Photoluminescence and thermoluminescence of Ce3+ and Eu2+ in Ca2Al2SiO7 matrix

Cited by 58 publications

References 23 publications

Enhanced luminescence performance of Sr2MgSi2O7:Eu2+ blue long persistence phosphor by co-doping with Ce3+ ions

Enhanced luminescence performance of Sr2MgSi2O7:Eu2+ blue long persistence phosphor by co-doping with Ce3+ ions

Enhanced long-persistence of Ca2Al2SiO7:Ce3+ phosphors for mechanoluminescence and thermoluminescence dosimetry

Photoluminescence properties of a new Eu2+-activated CaLaGa3S7 yellowish-green phosphor for white LED applications

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