Spectral and surface investigations of Mn2+ doped SrZnO2 nanocrystalline phosphors

Bedyal, A.K.; Kumar, Vinay; Sharma, Vishal; Pitale, Shreyas S.; Coetsee, E.; Duvenhage, Mart‐Mari; Ntwaeaborwa, O.M.; Swart, H.C.

doi:10.1007/s10853-012-7121-8

Cited by 25 publications

(6 citation statements)

References 30 publications

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“…doped CLHA nanopowders under excitation wavelength of 325 nm. Transition metal ions were widely used in the preparation of various phosphor materials for household and commercial applications due to its visible broadband emission extending in the region of 500-700 nm [27]. In this study, a sharp and dominated yellow emission at 577 nm, a suppressed blue emission at 425 nm and a weak UV-Visible emission at 368 nm are observed in Co 2?…”

Section: Optical Absorption Studymentioning

confidence: 71%

Structural and photoluminescence studies of Co2+ doped Ca–Li hydroxyapatite nanopowders

Koutavarapu

Babu

Rao

et al. 2015

J Mater Sci: Mater Electron

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Co 2? doped Calcium-Lithium Hydroxyapatite (CLHA) nanopowders were prepared by mechanochemical synthesis and characterized by different techniques. From Powder XRD data, the crystal system belongs to hexagonal structure and lattice cell parameters, average crystallite size were evaluated. The morphologies of prepared samples were analyzed by using SEM and TEM studies. Optical and EPR data confirms that the doped Co 2? enter into host material as distorted octahedral site symmetry. PL studies of Co 2? doped CLHA nanopowders exhibit UV, blue and yellow emission bands. CIE chromaticity coordinates were also calculated from emission spectra of Co 2? doped CLHA nanopowders. Vibrational bands related to phosphate molecules, P-O-H and hydroxyl ions are observed in FT-IR spectra.

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Section: Optical Absorption Studymentioning

confidence: 71%

Structural and photoluminescence studies of Co2+ doped Ca–Li hydroxyapatite nanopowders

Koutavarapu

Babu

Rao

et al. 2015

J Mater Sci: Mater Electron

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“…463 nm, 684 nm peaks correspond to CdO [43,45] and 615 nm peak correspond to zinc phosphate [1]. The emission peak observed at 536 nm corresponds to 6 A 1g (S) / 4 T 1g (G) transition of Mn 2þ ions, it occurs due to the recombination of electrons and holes from conduction band to valence band [46,47]. A slight increase in the intensity of emission spectra can be noted with addition of dopant into host material.…”

Section: Photoluminescence Studiesmentioning

confidence: 94%

Synthesis and characterization of Mn2+ doped CdOZn3(PO4)2 nanocomposites

Bhaskararao

Satyavathi

Rao

et al. 2017

Journal of Molecular Structure

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“…The luminescence peak exhibits fo ur intense wave length emiss io n on 375nm (3.30eV), and 532nm (2.33eV), 680n m (1.87eV) and 735nm (1.68eV). Due to the vis ible broadband regio n of 500-800n m transitio n metal io ns were wide ly used [38]. The e miss ion at 375nm (3.30eV) whic h may possib ly be recognized to a co mbined c harge at the sulfur interstitials and donor le vel with ho les restrained at the Zinc vacanc ies on acceptor leve l [39].…”

Section: Photo Luminescence Studymentioning

confidence: 99%

Synthesis and Characterization of Co<sup>2+</sup> Ions Doped ZnS-CdS Composite Nanopowder

Madhavi¹

2020

Preprint

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ZnS-CdS composite nano-powder doped with (0.01 mol %) Cobalt has been collected by a co-precipitation process at 300 K. The sample is characterized by structural, combined spectroscopic methods and magnetic studies. The prepared samples were belonging to cubic structure no impurity phases were observed. Doping of cobalt increase the neighborhood strain assessment and a decreases lattice constants decides from x-ray diffraction data. The crystallite size is 10.42nm. From UV-absorption and EPR studies revealed that the energy band gap of Co2+ doped ZnS-CdS composite nanopowder and extension of sp-d exchange interactions and common d-d transitions. The variation in the energy bandgap varies as a function of cobalt concentration is due to structural modification. Photoluminescence spectrum reveals the defect-related emissions and shows the formation of luminescence. FT-IR spectrum confirmed the feature vibrational manner of Zn, Cd, O–H and sulfide ions are in the host lattice. The doping-induced magnetic properties are studied by vibrating sample magnetometer which matches with the theoretical values besides ferromagnetic nature. Magnetic studies confirm the ferromagnetic nature of the material. Surface morphology and chemical homogeneity studies were carried out by using SEM with EDAX. Transmission electron microscope recommends the crystalline nature of nanoparticles, with average particle size is of the order of 20-100nm.

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Spectral and surface investigations of Mn2+ doped SrZnO2 nanocrystalline phosphors

Cited by 25 publications

References 30 publications

Structural and photoluminescence studies of Co2+ doped Ca–Li hydroxyapatite nanopowders

Structural and photoluminescence studies of Co2+ doped Ca–Li hydroxyapatite nanopowders

Synthesis and characterization of Mn2+ doped CdOZn3(PO4)2 nanocomposites

Synthesis and Characterization of Co<sup>2+</sup> Ions Doped ZnS-CdS Composite Nanopowder

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