Monika Sheoran
Maharshi Dayanand University
CombustionCrystal structureRietveld refinementAnalytical chemistryPhosphorCrystalliteNanomaterialsNanocrystalline materialLuminescenceTetragonal crystal systemNanotechnologyNanocrystalLight-emitting diodeBand gapPowder diffractionMaterials scienceDiffractionPhotonicsScanning electron microscopeGreen-lightRed ColorOxideHexagonal phaseOptoelectronicsLaserCrystalDopingSolid-state lightingTernary operationLuminanceDiodeQuenchingPhotoluminescence
6Publications
3H-index
23Citations
Publications 11
Newest
#1Monika SheoranH-Index: 3
#2Priyanka SehrawatH-Index: 13
Last. Renu MalikH-Index: 3
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#1Monika SheoranH-Index: 3
#2Priyanka SehrawatH-Index: 13
Last. Renu MalikH-Index: 3
view all 4 authors...
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#2Renu Malik (Maharshi Dayanand University)H-Index: 3
Abstract null null A new-variety of cool-white-emitting Ba2YAlO5:Dy3+ nanomaterials has been prepared via a cost-effective, energy-saving and ecofriendly propellant-combustion-synthesis, to boost the performance of single–phase wLEDs (white-light-emitting diodes). X-ray-diffraction-profiles substantiate distortion-free Dy3+-diffusion into monoclinic Ba2YAlO5-prototype. Photoluminescence-spectra exhibits two-emission-bands in visible-domain centered at 486 (bluish) and 579 nm (golden), to impart ...
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#1Monika Sheoran (Maharshi Dayanand University)H-Index: 3
#2Priyanka Sehrawat (Maharshi Dayanand University)H-Index: 13
Last. Rajiv Malik (Maharshi Dayanand University)H-Index: 12
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Abstract A simple, non-hazardous and cost effective, solution combustion fabrication route was adopted to prepare novel BaSrY4(1-x)Er4xO8 (x = 0.5 -5 mol %) nanocrystals. Investigations related to crystal structure and phase purity of the prepared nanophosphors were made by using X-Ray Diffraction (XRD) based Rietveld refinement analysis technique. Crystallite size of the prepared nanocrystals was analysed from Transmission Electron Microscopy (TEM) technique and the morphological examinations w...
4 CitationsSource
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#1Priyanka Sehrawat (Maharshi Dayanand University)H-Index: 13
#2Renu Malik (Maharshi Dayanand University)H-Index: 3
Last. Sanjeev Maken (Deenbandhu Chhotu Ram University of Science and Technology)H-Index: 23
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Abstract null null A new-series of ultra-violet-triggered green-emanating Sr6Al4Y2O15:Er3+ nanomaterials had been developed via urea-fueled-solution-combustion-scheme for first-time. The monoclinic crystalline-phase structure was engineered through Rietveld-X-ray-powder-diffractograms (XRPD)-refinement analysis. Present materials stimulated by 381 nm light manifested characteristic-green-peak (551 nm) in visible-regime. Emission-attenuation was witnessed post x = 0.03, fluorescent-composition of...
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#1Priyanka Sehrawat (Maharshi Dayanand University)H-Index: 13
#2Rajiv Malik (Maharshi Dayanand University)H-Index: 12
Last. Monika Sheoran (Maharshi Dayanand University)H-Index: 3
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Abstract In the current empirical-study, novel green-glimmering BaLa2ZnO5:Er3+ nanomaterials have been fabricated via conventional-combustion-synthesis. XRPD-facilitated Rietveld-analysis report tetragonal nanocrystals with 14/ m c m phase-group. Photoluminescence analysis manifest their green-radiance under 383 nm-excitation. Best luminance has been attained at x = 0.03 Er3+-content. Quantum-efficiency and color-purity of optimal sample has been reckoned as 84.74 and 83.75 %, respectively. Exce...
8 CitationsSource
#5Renu Malik (Maharshi Dayanand University)H-Index: 3
Abstract Novel orthorhombic symmetry type BaSrY4(1-x)Dy4xO8 (x = 1, 3, 5, 7, 10 mol %) cool white light emitting nanocrystals was synthesized by low temperature based solution combustion approach. Information related to crystallographic analysis was made by utilizing X-ray diffraction and Rietveld-refinement technique. The manufactured nanoparticles exhibit cool white emission corresponding to 4F9/2 → 6H15/2 (at 480 nm, blue color) , 4F9/2 → 6H13/2 (at 572 nm, yellow color) and 4F9/2 → 6H11/2 (a...
8 CitationsSource
The present prospective observational study reports the generation of new Sm3+-incorporated BaYAlZn3O7 nanomaterials via urea-combustion route. Rietveld facilitated XRPD (X-ray powder diffraction) analysis outlines the absolute hexagonal phase in the nano-crystalline powders. Photo-luminescence (PL) technique reports the intense-orange–red emission, centered at 708 nm maximum. Higher content of Sm3+ retards the PL life-time and intensity, such that x = 0.02 is the best luminance composition. Pos...
9 CitationsSource
#1Monika Sheoran (Maharshi Dayanand University)H-Index: 3
#2Priyanka Sehrawat (Maharshi Dayanand University)H-Index: 13
Last. Renu Malik (Maharshi Dayanand University)H-Index: 3
view all 7 authors...
A series of green light-emitting Ba5Zn4Y8O21:Er3+ nanophosphors were prepared via single-step solution combustion process. PXRD-Rietveld investigation revealed that Er3+ ions are well-substituted Y3+ ions and no major change was observed in the crystalline structure of pure host matrix. Tetragonal nanoparticles with almost no agglomeration were revealed by morphological analysis. Different elements present in the prepared nanomaterials were elucidated via EDAX mapping. Photoluminescence investig...
1 CitationsSource