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RESEARCH PRODUCT
Enhancement of persistent luminescence in Ca2SnO4: Sm3+
Krisjanis SmitsAndris AntuzevicsGuna KriekeDonats Millerssubject
Materials scienceScanning electron microscopeOrganic ChemistryAnalytical chemistry02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesAtomic and Molecular Physics and Optics0104 chemical sciencesElectronic Optical and Magnetic Materialslaw.inventionAfterglowInorganic ChemistryPhotochromismPersistent luminescencelawElectrical and Electronic EngineeringPhysical and Theoretical Chemistry0210 nano-technologyLuminescenceElectron paramagnetic resonanceSpectroscopySpectroscopyExcitationdescription
Abstract Reddish-orange persistent luminescent Ca2SnO4: 0.1% Sm3+ co-doped with 0–10% Gd3+ was prepared using solid state synthesis. The phase formation and morphology was analyzed using X-ray diffraction and scanning electron microscopy. Incorporation of Sm3+ and Gd3+ in Ca2SnO4 lattice was investigated using site-selective spectroscopy and electron paramagnetic resonance. In all samples reddish-orange persistent luminescence and photochromic effect was observed after excitation with UV as well as X-rays. The thermostimulated luminescence curves indicated that the introduction of Gd3+ increases the number of shallow traps of charges which enhance the intensity of persistent luminescence. In samples with high Gd3+ content (5–10%) an additional luminescence band in the near-infrared spectral region was detected. The origin of this band was discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-03-01 | Optical Materials |