Europium doped zirconia luminescence

Šmits, Krišjānis; Grigorjeva, L.; Millers, D.; Šarakovskis, Anatolijs; Opalińska, A.; Fidelus, Janusz D.; Łojkowski, Witold

doi:10.1016/j.optmat.2010.03.002

Cited by 115 publications

(49 citation statements)

References 23 publications

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“…Ultrafine zirconia (ZrO 2 ) particles or nano particles have been reported to have unique properties such as excellent refractoriness and chemical resistance, good mechanical strength, high ionic conductivity, low thermal conductivity at high temperature to get her with relatively high thermal expansion coefficient high refractive index, low phonon energy, high chemical and good thermal stability (Conga et al, 2007;Emeline et al, 1998;Ghosh & Patra, 2006;Meetei et al, 2012;Smits et al, 2010;Tamrakar, Bisen, Upadhyay and Tiwari, 2014;Tiwari, Kuraria, & Tamrakar, 2014;Xu et al, 2008), because of all these reasons Zirconia is an attractive material in both fundamental and application-oriented research. Red light emission from (600e630 nm) Eu 3þ doped phosphors are extensively used in lamp and display applications.…”

Section: Introductionmentioning

confidence: 99%

“…Red light emission from (600e630 nm) Eu 3þ doped phosphors are extensively used in lamp and display applications. Many Eu 3þ doped materials are being examined for use in new flat panel display technologies (Chen, Liu, & Li, 2004;Dubey, Tiwari, Pradhan, et al, 2014;Dubey, Tiwari, Tamrakar, et al, 2014;Meetei et al, 2012;Smits et al, 2010;Tamrakar, Dubey, Swamy, Tiwari, Pammi, Ramakrishna et al, 2013). Therefore, extensive amount of works have been reported on the properties of bulk and nanocrystalline ZrO 2 of different crystalline phases.…”

Section: Introductionmentioning

confidence: 99%

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Photoluminescence behavior of ZrO2: Eu3+ with variable concentration of Eu3+ doped phosphor

Tamrakar

Bisen

Upadhyay³

2015

Journal of Radiation Research and Applied Sciences

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PhotoluminescenceScanning electron microscope CIE a b s t r a c tThe ZrO 2 phosphor doped with Eu 3þ was synthesized by solid state reaction method which is suitable for large scale production, and high temperature synthesis method.The prepared nanoparticles of ZrO 2 phosphor was characterized by X-ray diffraction technique (XRD) for Structural analysis and field emission gun scanning electron microscopy (FEGSEM)) for morphological details. The optical behavior of the prepared phosphor was determined by photoluminescence (PL) spectra recorded in room temperature. The PL excitation spectra was found at 311 nm range and the emission spectra in the range of 400e650 nm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photoluminescence behavior of ZrO2: Eu3+ with variable concentration of Eu3+ doped phosphor

Tamrakar

Bisen

Upadhyay³

2015

Journal of Radiation Research and Applied Sciences

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“…and Ca 2? ) ions, generating oxygen vacancies as a result of charge compensation [11][12][13]. Even sulfur impurities have been used to stabilize the cubic form [14].…”

Section: Introductionmentioning

confidence: 99%

Structure–property relationship of luminescent zirconia nanomaterials obtained by sol–gel method

et al. 2014

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Nanocrystalline ZrO 2 materials were prepared by sol-gel method combining different W = [H 2 O]/[ZTB] ratios (ZTB: zirconium tetrabutoxide) with 600, 800, and 1000°C annealing temperatures, yielding diverse phase compositions. A lower post-synthesis annealing temperature (600°C) favored the t-ZrO 2 tetragonal phase while higher temperatures (800 and 1000°C) yielded the monoclinic one (m-ZrO 2 ). Depending on the preparation conditions, mixed structure materials are readily obtained. The luminescence activator in the undoped ZrO 2 is assumed as trivalent titanium and emission bands are assigned to the 3d 1 (e g ) ? 3d 1 (t 2g ) transition. Due to weaker crystal field in m-ZrO 2 form, the Ti 3? emission band is red-shifted from 410 nm in t-ZrO 2 to 500 nm. The luminescence intensity of the t-ZrO 2 form is quenched at higher temperature than that of m-ZrO 2 , indicating higher activation energy and smaller Stokes shift. The undoped ZrO 2 excitation seems to involve photoionization of Ti 3? to Ti IV . Simultaneously, the freed electron is trapped to the oxygen vacancies (F ?? centers) created by Ti 3? /Ti IV charge compensation, so this can be considered as a metalto-host/ligand charge transfer. Since most of the excitation results in immediate emission, the traps are probably very shallow though deeper ones leads to the persistent luminescence from the undoped ZrO 2 .

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“…Phase stabilization using only oxygen vacancies was confirmed by theoretical calculations [24]. In addition to phase stabilization, oxygen vacancies also strongly affect the luminescence intensity of the Ln 3+ ions and the Stark splitting of the spectral terms [25,26]. The change in the luminescence intensity and the phase transition from ZrO 2 equilibrium modification to metastable tetragonal and even cubic occurs with an increase of the lanthanide content in its crystal lattice.…”

Section: Introductionmentioning

confidence: 78%

Phase composition and photoluminescence correlations in nanocrystalline ZrO2:Eu3+ phosphors synthesized under hydrothermal conditions

Bugrov¹,

Smyslov²,

Zavialova³

et al. 2018

Nanosystems: Phys. Chem. Math.

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Luminescent zirconia nanoparticles with europium ion content 1 and 10 mol.% were synthesized under hydrothermal conditions. Annealing of ZrO 2 : 1 mol. Eu 3+ nanoparticles made it possible to obtain a sample with a high monoclinic phase content up to 92 %. An increase in the concentration of Eu 3+ ions introduced into the zirconia crystal lattice has made it possible to almost completely convert its monoclinic and tetragonal phases into cubic modification. The phase composition of the synthesized samples was determined by powder X-ray diffraction, electron microdiffraction, and Raman spectroscopy. Analysis of the crystallographic data and the luminescent spectra helped to reveal correlations between the ZrO 2 :Eu 3+ nanophosphor structure and the energy redistribution of Eu 3+ optical transitions at 614 -626 nm and 606 -633 nm wavelengths. In addition, a relationship was established between the phase composition of nanoparticles based on zirconia and the luminescence lifetime of Eu 3+ ions.

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Europium doped zirconia luminescence

Cited by 115 publications

References 23 publications

Photoluminescence behavior of ZrO2: Eu3+ with variable concentration of Eu3+ doped phosphor

Photoluminescence behavior of ZrO2: Eu3+ with variable concentration of Eu3+ doped phosphor

Structure–property relationship of luminescent zirconia nanomaterials obtained by sol–gel method

Phase composition and photoluminescence correlations in nanocrystalline ZrO2:Eu3+ phosphors synthesized under hydrothermal conditions

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