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Browsing by Author "Dejene, FB"

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Energetic, electronic and optical properties of lanthanide doped TiO2: An ab initio LDA+U study

Author: Mulwa, WM ; Ouma, CNM ; Onani, MO ; Dejene, FB Date: May 2016 Substitutional energies, thermodynamic charge transition levels and optical properties of lanthanide doped anatase TiO(sub2) has been investigated using local density approximation with the Hubbard U correction (LDA+U) within the density ... Read more
Pulsed laser deposited KY3F10: Ho3+ thin films: Influence of target to substrate

Author: Debelo, NG ; Dejene, FB ; Roro, Kittessa T Date: Apr 2017 The influence of target to substrate distance (dts) on the structural, morphological and photoluminescence (PL) properties of commercially obtained KY3F10 : Ho3+ phosphor thin films prepared by pulsed laser deposition is investigated for dts ... Read more
Structural and luminescence properties of yellow Y3Al5012:Ce3+ thin film phosphors prepared by Pulsed Laser Deposition

Author: Dejene, FB ; Roro, Kittessa T ; Koao, LF Date: Jul 2012 Recently, by combining a blue indium gallium nitride (InGaN) light emitting diodes (LED) with yellow Ce-doped Y3Al5O12 (YAG) phosphore, different groups have successfully demonstrated white LEDs. The production of white light was made possible ... Read more
Synthesis and characterization of BaxMgyAl2O4: Eu,Dy nanophosphors prepared using solution-combustion method

Author: Kebede, Mesfin A ; Dejene, FB Date: Jul 2011 Europium-doped barium magnesium aluminate (BaxMgyAl2O4:Eu) phosphors were obtained at low temperature using the solution-combustion of corresponding metal nitrate-urea solution mixtures. The particle sizes, morphology, structural and luminescent ... Read more
Synthesis and photoluminescence properties of CaSixOy:Tb3+ phosphors prepared using solution-combustion method

Author: Dejene, FB ; Kebede, Mesfin A Date: Jul 2011 Effect of Tb3+ ion concentrations on the structural and persistence luminescence properties of CaSixOy:Tb3+ crystals were evaluated using powders grown by the solution combustion technique. The XRD study indicates the change of phase from ... Read more

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Browsing by Author "Dejene, FB"

Browsing by Author "Dejene, FB"

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