Structural, optical, luminescence properties and energy transfer mechanism of Tb3+/Eu3+co-doped SrLa2(MoO4)4 phosphors produced by sol-gel process
| Autor: | A. Çetin, Mehmet İsmail Kati, Yasemin Tuncer Arslanlar, İlker Çetin Keskin, Kadir Ay, M. Turemis, Serdar Gultekin, R. Kibar |
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| Přispěvatelé: | Department of Physic, Faculty of Science, Manisa Celal Bayar University, Manisa, 45030, Turkey, Department of Metallurgical and Materials Engineering, Dokuz Eylul University, İzmir, Turkey, Experimental Science Applications and Research Center, Manisa Celal Bayar University, Manisa, 45030, Turkey, Department of Physics, Faculty of Engineering and Natural Sciences, Bursa Technical University, Bursa, Turkey, Department of Chemistry, Faculty of Science, Manisa Celal Bayar University, Manisa, 45030, Turkey |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Photoluminescence Materials science Mechanical Engineering Doping Metals and Alloys Analytical chemistry Phosphor 02 engineering and technology Radioluminescence 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Mechanics of Materials Excited state Differential thermal analysis Materials Chemistry 0210 nano-technology Luminescence |
| Popis: | Tb3+/Eu3+ co-doped SrLa2(MoO4)(4) have been synthesized using the sol-gel process. The as-produced light-emitting phosphors were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analysis (DTA)/thermogravimetric analysis (TG), optical absorption spectra, radioluminescence (RL), and photoluminescence (PL) spectra. The effect of Tb(3+)and Eu(3+)doping concentrations on the RL and PL intensity of host material was analyzed in details. Furthermore, the energy transfer mechanism based on RL spectra were determined of Tb3+/Eu(3+)co-doped SrLa2(MoO4)(4) phosphors. When the samples excited by X-ray, the SrLa2(MoO4)(4) phosphors exhibit characteristic emissions of Tb3+ (489, 544, 586, 620 and 675 nm) and Eu(3+)d (545, 592, 614, 650 and 700 nm). Also, similar emissions are observed in the results of PL spectra, when the samples excited by 488 nm. The host material has excellent energy transfer efficiency for lanthanide ions. In addition, the luminescence spectra indicated that the energy transfer is also effective between from Tb3+ to Eu(3+)and vice versa. The CIE parameters are calculated to characterize the color emission. Under UV excitation, the synthesized materials display different color from green to red. Based on the results, the SrLa2(MoO4)(4:Eu)(3+)(3+)(,Tb) phosphors may be potential candidates for light-emitting diode. (C) 2019 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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