GdAlO3:Eu3+:Bi3+ nanophosphor: Synthesis and enhancement of red emission for WLEDs

Shilpa, C.J.; Jayaram, Akila Kadgathur; Dhananjaya, N.; Nagabhushana, H.; Prashantha, S.C.; Sunitha, D.V.; Sharma, S.C.; Shivakumara, C.; Nagabhushana, B.M.

doi:10.1016/j.saa.2014.05.082

Cited by 36 publications

(11 citation statements)

References 30 publications

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“…Also, it was noticed that little quantity of work was reported on the photoluminescence properties of alkali metal ions co-doped with Eu 3+ ions. Addition of little quantity of codopants into the host material leads to increases the crystallinity, creates more oxygen vacancies and removes the charge imbalance problem, due to its low oxidation states and distinct ionic radii [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

Girish

Prashantha²,

Naik³

et al. 2019

SN Appl. Sci.

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A novel Li + and Bi 3+ ions (0.5-2.0 mol%) co-doped Zn 2 TiO 4 :Eu 3+ (7 mol%) nanophosphors were synthesised by two step combustion route and its effect on luminescence characteristics are described. Addition of Li + and Bi 3+ ions does not introduce new luminescence characteristics but affects the intensity of Eu 3+ related emission. Crystalline structure were characterized by powder X-ray diffraction technique which confirms the formation of a cubic structure and the influence of synthesise conditions on surface morphology was examined by scanning electron microscopic technique. The photoluminescence (PL) properties of Li + and Bi 3+ ions (0.5-2.0 mol%) co-doped Zn 2 TiO 4 :Eu 3+ (7 mol%) show characteristic 4f-4f emissions of Eu 3+ ions at 578, 592, 613 and 654 nm, also reveals that the small quantity of co-dopant ions was highly effective for charge compensation as well as formation of lattice defects to boost the PL emission. Further, Commission International de I'E' clairge chromaticity and color purity results suggests that, the synthesised phosphor can be used as a red component for production of near ultraviolet based wLEDs, solid state lightning and display applications.

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Section: Introductionmentioning

confidence: 99%

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

Girish

Prashantha²,

Naik³

et al. 2019

SN Appl. Sci.

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“…Eu 3+ must be doped into a lattice to emit luminescence upon excitation. Eu 3+ -doped phosphor are very interesting materials for luminescence applications due to its red emission [15][16][17][18][19][20].…”

mentioning

confidence: 99%

High temperature solid state synthesis and photoluminescence behavior of Eu3+ doped GdAlO3 nanophosphor

Upadhyay¹,

Tamrakar

Dubey

2015

Superlattices and Microstructures

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“…A large variety of methods are available commercially for the synthesis of nanoparticles and these are based on the expense of nanoparticles' production, easiness, and morphological features. Among these methods, an auto-proliferating combustion process is considered to be the best alternative as by following this simple method, the required phase can be obtained with greater control over stoichiometric ratio [1][2][3]. This method of combustion synthesis requires the application of temperatures, where organic material is utilized to initiate the decomposition process of precursor metal salts [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Corrosion Studies of Friction Stir Welded Nano Al2O3 Reinforced Al-Mg Matrix Composites: RSM-ANN Modelling Approach

et al. 2021

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Nano aluminum oxide was prepared by the combustion method using aluminum nitrate as the oxidizer and urea as a fuel. Characterization of synthesized materials was performed using SEM (scanning electron microscope), powder XRD (X-ray diffraction), FTIR (Fourier transform infrared spectroscopy), and TEM (transmission electron microscope). Al-Mg/Al2O3 (2, 4, 6, and 8 wt%) metal matrix nanocomposites were prepared by liquid metallurgy route-vertex technique. The homogeneous dispersion of nano Al2O3 particles in Al-Mg/Al2O3 metal matrix nanocomposites (MMNCs) was revealed from the field emission SEM analysis. The reinforcement particles present in the matrix were analyzed through energy-dispersive X-ray spectroscopy method. The properties (corrosion and mechanical) of the fabricated composites were evaluated. The mechanical and corrosion properties of the prepared nanocomposites initially increased and then decreased with the addition of nano Al2O3 particles in Al-Mg Matrix. The studies show that, the presence of 6 wt% of nano Al2O3 particles in the matrix improved the properties of other combinations of nano Al2O3 in the Al-Mg matrix material. Further, the Al-Mg/Al2O3 (6 wt%) MMNCs are joined by friction stir welding and evaluated for microstructural, mechanical, and corrosion properties. Al-Mg/Al2O3 MMNCs may find applications in the marine field. The response surface method (RSM) was used for the optimization of tensile strength, Young’s modulus, and microhardness of the synthesized material which resulted in a 95% of statistical confidence level. Artificial neural network (ANN) analysis was also carried out which perfectly predicted these two properties. The ANN model is optimized to obtain 99.9% accurate predictions by changing the number of neurons in the hidden layer.

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GdAlO3:Eu3+:Bi3+ nanophosphor: Synthesis and enhancement of red emission for WLEDs

Cited by 36 publications

References 30 publications

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

Effect of Bi3+ and Li+ co-doping on the luminescence properties of Zn2TiO4:Eu3+ nanophosphor for display applications

High temperature solid state synthesis and photoluminescence behavior of Eu3+ doped GdAlO3 nanophosphor

Mechanical and Corrosion Studies of Friction Stir Welded Nano Al2O3 Reinforced Al-Mg Matrix Composites: RSM-ANN Modelling Approach

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