The influence of the complexing agent on the luminescence of multicolor-emitting Y2O3:Eu3+,Er3+,Yb3+ phosphors obtained by the Pechini's method

Oliveira, Nagyla A.; Bispo‐Jr, Airton G.; Shinohara, Gabriel Mamoru Marques; Lima, Sergio A. M.; Pires, Ana Maria

doi:10.1016/j.matchemphys.2020.123840

Cited by 18 publications

(3 citation statements)

References 43 publications

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“…Luminescent materials as well as lanthanide complexes have attracted much attention in recent decades due to their wide range of applications in photonics, namely, their use for obtaining tunable lasers, light-emitting diodes, optical amplifiers and luminescent probes for bioanalysis [1][2][3][4][5][6][7][8]. However, the lanthanides show very low absorption coefficients, which requires the use of certain lanthanides for additional excitation of the metal center.…”

Section: Introductionmentioning

confidence: 99%

Luminescent Coatings Based on (3-Aminopropyl)triethoxysilane and Europium Complex β-Diketophosphazene

et al. 2022

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The reaction of β-diketophosphazene with the europium (III) salt synthesized the corresponding metal complex which was structured with (3-aminopropyl)triethoxysilane and treated with dibenzoylmethane for additional coordination of europium atoms. The polymer thus obtained exhibits luminescence with a maximum of 615 nm, which is characteristic of europium. The polymer is thermally stable up to 300 °C, the coating based on it has a contact angle of 101°, and the adhesive strength of the coating to non-finished glass (according to ISO 2409: 2013) is 1 point.

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Section: Introductionmentioning

confidence: 99%

Luminescent Coatings Based on (3-Aminopropyl)triethoxysilane and Europium Complex β-Diketophosphazene

et al. 2022

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“…[11], [12] Belong to the RE group, yttria (Y2O3) has been used as a host material of other REs due to its intrinsic lattice characteristics that enable the insertion of other RE ions into its structure (doping), providing the development of advanced structures and useful applications in transparent ceramics [13], lasers [14], biomaterials [15], and energy [16]. Oliveira et al [17] obtained multi-colour-emitting, highcrystalline and micro-sized Y2O3:Eu 3+ ,Er 3+ ,Yb 3+ particles using sorbitol as an alternative to enhance the luminescence of Pechini-derived phosphors. In our recent study [18], it was found out that the dosimetric characteristics of yttria were improved by using 2at.%Eu as dopant.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Thulium-yttria Nanoparticles with EPR Response

Santos

Rodrigues²,

Rodrigues³

2022

Braz. J. Rad. Sci.

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Approaches to form new materials for radiation dosimetry are essential to enhance quality assurance and quality improvement practices based on radiation protection concept. The present work reports a hydrothermal synthesis based on a relative low temperature and pressure to form thulium-yttria nanoparticles with electron paramagnetic resonance response. Thulium-yttria nanoparticles were prepared and characterized by XRD, SEM, PCS, and EPR. According to results, the hydrothermal method provided thulium-yttria nanoparticles with cubic C-type structure, mean particle size (d50) less than 160nm, and EPR response. The EPR spectra of powders exhibited two resonance peaks p1 and p2 recorded at 350 and 160mT, respectively. The enhancement of the EPR response of yttria by the use of thulium as a dopant provide meaningful parameters to advance in the formation of new rare earth based materials for radiation dosimetry.

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“…Among the large number of materials for optoelectronics, luminescent materials are of particular importance, which are used to create displays, scintillators, and means for recording and visualizing information. One of the widespread crystal matrices of phosphors is cubic yttrium oxide Y2O3, activated by ions of rare-earth metals [1][2][3][4]. Among them, the most studied phosphor of micron dispersion is phosphorus Y2O3:Eu with a red emission region.…”

Section: Introductionmentioning

confidence: 99%

ANALYSIS OF SPECTRAL AND KINETIC CHARACTERISTICS OF CATHODOLUMINESCENCE OF Y2O3:Eu THIN FILMS AS A RED COMPONENT OF FULL-COLOR HIGH-RESOLUTION FLUORESCENT DISPLAYS

Bordun¹,

Bordun²,

Kofluik³

et al. 2022

ELIT

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The spectra and kinetics of the rising and decay of cathodoluminescence (CL) of thin Y2O3:Eu films obtained by the method of RF-magnetron sputtering are studied. Based on the shape of the CL spectra at different energies and excitation current densities, the possibility of the formation of irregular solutions of yttrium and europium oxide and the features of the structure of surface and bulk layers are shown. The dependence of the CL intensity on the energy of the exciting electrons and the current density of the electron irradiation has been investigated. The CL decay time constant for the 612 nm luminescence is determined, the value of which is in the range (1.8 -4.1) ms. It is shown that this quantity is a complex function of the type of film deposition atmosphere, the concentration of the activator, and the duration of the exciting pulses. The features of CL rising are investigated and it is proposed to analyze the structural perfection of Y2O3:Eu thin films based on the delay in CL rising.

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The influence of the complexing agent on the luminescence of multicolor-emitting Y2O3:Eu3+,Er3+,Yb3+ phosphors obtained by the Pechini's method

Cited by 18 publications

References 43 publications

Luminescent Coatings Based on (3-Aminopropyl)triethoxysilane and Europium Complex β-Diketophosphazene

Luminescent Coatings Based on (3-Aminopropyl)triethoxysilane and Europium Complex β-Diketophosphazene

Synthesis of Thulium-yttria Nanoparticles with EPR Response

ANALYSIS OF SPECTRAL AND KINETIC CHARACTERISTICS OF CATHODOLUMINESCENCE OF Y2O3:Eu THIN FILMS AS A RED COMPONENT OF FULL-COLOR HIGH-RESOLUTION FLUORESCENT DISPLAYS

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