Effect of Li+ and Zn2+ co-doping on PL properties of Y2O3:Eu3+ phosphor

Ukare, R. S.; Zade, G. D.; Raju, B. Deva Prasad; Dhoble, S.J.

doi:10.1016/j.ijleo.2015.10.236

Cited by 9 publications

(1 citation statement)

References 21 publications

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“…The weak absorption band at 3616 cm À1 was detected due to the symmetric O-H stretching vibration (n) of the (OH) hydroxyl group. 23 This is attributed to the H 2 O molecule, as KBr absorbed the moisture from the air during the pellet preparation or absorbed water by nanophosphors materials from the ambient atmosphere due to its high surface to volume ratio. The strong absorption bands at 1648, 1563, 1410, 1348, and 1262 cm À1 are attributed to C-O stretching vibration (n) and the bands at 1050, 1018, and 925 cm À1 are attributed to C-O bending vibration (d), respectively.…”

Section: Resultsmentioning

confidence: 99%

The effect of lithium on structural and luminescence performance of tunable light-emitting nanophosphors for white LEDs

2020

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Section: Resultsmentioning

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The effect of lithium on structural and luminescence performance of tunable light-emitting nanophosphors for white LEDs

2020

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Role of Li⁺ ions on the surface morphology and thermoluminescence properties of Y₂O₃:Tm³⁺ nanophosphor

2020

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Y2O3:Tm3+ and Li+ co‐doped Y2O3:Tm3+ nanopowders were synthesized using the solution combustion method for possible application in ultraviolet (UV) light dosimetry. X‐ray diffraction revealed the crystallite sizes to be in the range 21–44 nm and 30–121 nm using the Scherrer equation and the W‐H plot relationship, respectively. Field emission scanning electron microscopy confirmed that, after co‐doping with 4 mol% concentration of Li+, the particles were spherical in nature with an average size of ~30 nm. Fourier transformed infrared spectroscopy results showed bands at wavenumbers of 556, 1499, 1704, 2342, 2358, 2973, 3433, and 3610 cm−1 that corresponded to the stretching and bending vibrations of Y–O, C=O and O–H. Thermoluminescence (TL) glow peaks for Y2O3:Tm3+ nanophosphors observed at 399 and 590 K were attributed to oxygen defects caused using UV irradiation. These oxygen defects firstly resulted in an increased prominent peak TL intensity for up to 270 min of irradiation and then a decrease. This was attributed to the presence of oxygen defect clusters that caused a reduction in recombination centres. The Li+ co‐doped sample showed peaks at 356, 430, and 583 K and its intensity sublinearly increased up to 90 min and then thereafter decreased. The TL trapping parameters were calculated using computerized glow curve deconvolution methods. The Li+ co‐doped sample exhibited less fading and high trap density under the UV radiation.

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Study the effect of Zn2+ co-doping on the structural and optical properties of CdSiO3:Eu3+ phosphor

Shivakumara¹,

Manjunatha²,

et al. 2022

Appl. Phys. A

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Effect of Li+ and Zn2+ co-doping on PL properties of Y2O3:Eu3+ phosphor

Cited by 9 publications

References 21 publications

The effect of lithium on structural and luminescence performance of tunable light-emitting nanophosphors for white LEDs

The effect of lithium on structural and luminescence performance of tunable light-emitting nanophosphors for white LEDs

Role of Li⁺ ions on the surface morphology and thermoluminescence properties of Y₂O₃:Tm³⁺ nanophosphor

Study the effect of Zn2+ co-doping on the structural and optical properties of CdSiO3:Eu3+ phosphor

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Effect of Li+ and Zn2+ co-doping on PL properties of Y2O3:Eu3+ phosphor

Cited by 9 publications

References 21 publications

The effect of lithium on structural and luminescence performance of tunable light-emitting nanophosphors for white LEDs

The effect of lithium on structural and luminescence performance of tunable light-emitting nanophosphors for white LEDs

Role of Li+ ions on the surface morphology and thermoluminescence properties of Y2O3:Tm3+ nanophosphor

Study the effect of Zn2+ co-doping on the structural and optical properties of CdSiO3:Eu3+ phosphor

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Role of Li⁺ ions on the surface morphology and thermoluminescence properties of Y₂O₃:Tm³⁺ nanophosphor