Luminescence properties of dysprosium doped calcium magnesium silicate phosphor by solid state reaction method

Sahu, Ishwar Prasad; Chandrakar, Priya; Baghel, R.N.; Bisen, D. P.; Brahme, Nameeta; Tamrakar, Raunak Kumar

doi:10.1016/j.jallcom.2015.06.011

Cited by 43 publications

(9 citation statements)

References 40 publications

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“…12 shows the time corresponds to ML signal peak with impact velocity of Sr 2 Al 2 SiO 7 :Dy 3+ ; Sr 2 Al 2 SiO 7 :Eu 2+ ; and Sr 2 Al 2 SiO 7 :Eu 2+ , Dy 3+ phosphors The relationship between semi-log plot of ML intensity versus (t -t m ) for Sr 2 Al 2 SiO 7 :Dy 3+ ; Sr 2 Al 2 SiO 7 :Eu 2+ ; and Sr 2 Al 2 SiO 7 :Eu 2+ , Dy 3+ phosphors were shown in Fig. 13 (a, b, c), and the lines were fitted using the following equation with Origin 8.0 [57] line straight of slop…”

Section: Cie Chromaticity Coordinatementioning

confidence: 99%

RETRACTED: Luminescence enhancement of bluish-green Sr2Al2SiO7:Eu2+ phosphor by dysprosium co-doping

Sahu

Bisen

Brahme

et al. 2015

Journal of Luminescence

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Section: Cie Chromaticity Coordinatementioning

confidence: 99%

RETRACTED: Luminescence enhancement of bluish-green Sr2Al2SiO7:Eu2+ phosphor by dysprosium co-doping

Sahu

Bisen

Brahme

et al. 2015

Journal of Luminescence

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“…This is another factor that supports the idea that the Eu 3 + ionic radius (1.07 Å) is very close to that of Sr 2 + (about 1.12 Å) rather than to Si 4 + (0.41 Å). Therefore, Eu 3 + ions are expected to occupy the Sr 2 + sites in the Sr 2 SiO 4 :Eu 3 + (2.0%) phosphor . The original Sr 2 + position was replaced by Eu 3 + and the original Sr 2 + position is located somewhere else.…”

Section: Resultsmentioning

confidence: 99%

Orange‐red emitting europium doped strontium ortho‐silicate phosphor prepared by a solid state reaction method

Sahu

2016

Luminescence

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In the present article we report europium-doped strontium ortho-silicates, namely Sr SiO :xEu (x = 1.0, 1.5, 2.0, 2.5 or 3.0 mol%) phosphors, prepared by solid state reaction method. The crystal structures of the sintered phosphors were consistent with orthorhombic crystallography with a Pmna space group. The chemical compositions of the sintered phosphors were confirmed by energy dispersive X-ray spectroscopy (EDS). Thermoluminescence (TL) kinetic parameters such as activation energy, order of kinetics and frequency factors were calculated by the peak shape method. Orange-red emission originating from the D - F (J = 0, 1, 2, 3) transitions of Eu ions could clearly be observed after samples were excited at 395 nm. The combination of these emissions constituted orange-red light as indicated on the Commission Internationale de l'Eclairage (CIE) chromaticity diagram. Mechanoluminescence (ML) intensity of the prepared phosphor increased linearly with increasing impact velocity of the moving piston that suggests that these phosphors can also be used as sensors to detect the stress of an object. Thus, the present investigation indicates that the piezo-electricity was responsible for producing ML in the prepared phosphor.

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“…In the practical system, the electron traps and the hole traps may not be both equally abundant or important in terms of their contribution to the white light emission, as suggested in Fig. 9 [39,40].…”

Section: Photoluminescence (Pl)mentioning

confidence: 99%

Luminescence studies of dysprosium doped strontium aluminate white light emitting phosphor by combustion route

Sahu

Bisen

Brahme

et al. 2015

J Mater Sci: Mater Electron

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In the present investigation dysprosium doped strontium aluminate phosphor was prepared by combustion synthesis method. The crystal structure of the prepared phosphor was consistent with standard monoclinic phase with a space group P2 1 . According to the TEM analysis, the particle size was found to be in the nanometer range. The trap parameters which are mainly activation energy (E), frequency factor (s) and order of the kinetics (b) were evaluated by using the peak shape method. Under the ultraviolet (365 nm) excitation, photoluminescence (PL) spectra showed characteristic emission bands at 480 (blue), 573 (yellow) and 670 nm (red) due to 4

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Luminescence properties of dysprosium doped calcium magnesium silicate phosphor by solid state reaction method

Cited by 43 publications

References 40 publications

RETRACTED: Luminescence enhancement of bluish-green Sr2Al2SiO7:Eu2+ phosphor by dysprosium co-doping

RETRACTED: Luminescence enhancement of bluish-green Sr2Al2SiO7:Eu2+ phosphor by dysprosium co-doping

Orange‐red emitting europium doped strontium ortho‐silicate phosphor prepared by a solid state reaction method

Luminescence studies of dysprosium doped strontium aluminate white light emitting phosphor by combustion route

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