Bluish white emitting Sr sub(2)CeO sub(4) and red emitting Sr sub(2)CeO sub(4):Eu super(3+) nanoparticles: optimization of synthesis parameters, characterization, energy transfer and photoluminescence
Blue-white light emitting Sr sub(2)CeO sub(4) and red emitting Sr sub(2)CeO sub(4):Eu super(3+) nanoparticles were prepared using a polymeric precursor route. The synthetic conditions were optimized to achieve a suitable calcination temperature and heat treatment time. The systems were characterized...
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| Veröffentlicht in: | Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2013-10, Vol.1 (42), p.7054-7063 |
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| container_issue | 42 |
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| container_title | Journal of materials chemistry. C, Materials for optical and electronic devices |
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| creator | Gupta, Santosh K Sahu, Manjulata Krishnan, K Saxena, M K Natarajan, V Godbole, S V |
| description | Blue-white light emitting Sr sub(2)CeO sub(4) and red emitting Sr sub(2)CeO sub(4):Eu super(3+) nanoparticles were prepared using a polymeric precursor route. The synthetic conditions were optimized to achieve a suitable calcination temperature and heat treatment time. The systems were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The concentration of dopant ions was optimized to maximise the PL intensity. The effect of concentration on excitation, emission and lifetime spectroscopy was investigated in detail. The critical energy-transfer distance for the Eu super(3+) ions was evaluated and based on this, the quenching mechanism was verified to be a multipole-multipole interaction. The Judd-Ofelt parameter and other photophysical properties were evaluated for all samples. The observed trend in the J-O parameter was correlated with the characteristics of the chemical environments around the Eu super(3+) ions, with respect to the composition of the europium ion. |
| doi_str_mv | 10.1039/c3tc31219d |
| format | Article |
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| ispartof | Journal of materials chemistry. C, Materials for optical and electronic devices, 2013-10, Vol.1 (42), p.7054-7063 |
| issn | 2050-7526 2050-7534 |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Differential thermal analysis Emission analysis Emittance Europium Heat treatment Nanoparticles Scanning electron microscopy Thermogravimetric analysis |
| title | Bluish white emitting Sr sub(2)CeO sub(4) and red emitting Sr sub(2)CeO sub(4):Eu super(3+) nanoparticles: optimization of synthesis parameters, characterization, energy transfer and photoluminescence |
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