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    Persistent luminescence mechanism of tantalite phosphors 

    Noto, Luyanda Lunga (University of the Free State, 2014-11)
    Pr3+ ion doped ZnTa2O6, SrTa2O6, CaTa2O6 and ZnTaGaO5 phosphors, which display persistent luminescence were prepared by solid state chemical reaction at 1200 oC for 4 hours. A ZnTa2O6:Pr3+ phosphor that resembled an ...
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    Luminescent properties of Y2SiO5:Ce thin films 

    Coetsee, Elizabeth (University of the Free State, 2010-05)
    The luminescent properties of yttrium silicate doped with cerium (Y2SiO5:Ce) phosphor thin films were investigated. A detailed investigation (cathodoluminescence (CL), photoluminescence (PL) and Gaussian peak fits) was ...
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    Thermal, structural and luminescent properties of long after-glow MAlxOy:Eu²+,Dy³+ (M: Sr, Ba) phosphors 

    Bem, Barasa Daniel (University of the Free State, 2010-11)
    The optimization of properties for new and potentially useful materials becomes a continuous and sometimes a lifelong process if future applications are anticipated. Research on luminescent materials is a good example of ...
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    Characterization of Gd2O2S: Tb³+ phosphor powder and thin films 

    Dolo, Jappie Jafta (University of the Free State, 2011-06)
    Under Ultra violet (UV), cathode-ray and X-ray excitation, terbium activated rare earth oxysulphide (Gd2O2S:Tb3+) phosphors shows bright green luminescence. Due to its superior luminescent performance, Gd2O2S:Tb3+ phosphor ...
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    Characterization of SrAl₂O₄:Eu²⁺,Dy³⁺ nano thin films prepared by pulsed laser deposition 

    Nsimama, Patrick Damson (University of the Free State, 2010-11)
    English: Thin films of SrAl2O4:Eu2+,Dy3+ phosphor were deposited on silicon (Si (100)) substrates using a 248 nm KrF pulsed laser. Deposition parameters, namely; substrate temperature, pulse repetition rate, number of laser ...
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    Luminescent properties of synthesized PbS nanoparticle phosphors 

    Dhlamini, Mokhotjwa Simon (University of the Free State, 2008-08)
    Luminescent lead sulphide (PbS) nanoparticles embedded in an amorphous silica (SiO2) matrix were synthesized at room temperature by a sol-gel process. The prepared nanocomposite materials were crushed into powders and ...
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    Synthesis and characterization of down−conversion nanophosphors 

    Tshabalala, Kamohelo George (University of the Free State, 2014-10)
    Luminescent zinc aluminate (ZnAl2O4) nanoparticles, crystalline–low quartz and amorphous silica powders were incorporated with Ce3+ and Tb3+ ions. These powders were successfully synthesized by the solution combustion and ...
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    Investigation of the luminescent properties of metal quinolates (Mqx) for use in OLED devices 

    Duvenhage, Mart-Mari (University of the Free State, 2014-01)
    Since Tang and VanSlyke developed the first organic light emitting diode (OLED) in the late 80’s using tris-(8-hydroxyquinoline) aluminium (Alq3) as both the emissive and electron transporting layer, a lot of research has ...
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    Luminescence from lanthanide ions and the effect of co-doping in silica and other hosts 

    Ahmed, Hassan Abdelhalim Abdallah Seed (University of the Free State, 2012-07)
    Amorphous silica powders doped with lanthanide ions were synthesised by the sol-gel method and their cathodoluminescence (CL) and photoluminescence (PL) emissions were compared. Interesting differences depending on the ...
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    Synthesis and characterization of MgAl₂O₄ and (MgxZn₁-x)Al₂O₄) mixed spinel phospors 

    Tabaza, Wael Abed Ibrahim (University of the Free State, 2014-01)
    Magnesium aluminate (MgAl2O4) has received special attention as a technologically important material because of its attractive properties, such as mechanical strength, chemical inertness, a wideband gap, relatively low ...
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    AuthorAhmed, Hassan Abdelhalim Abdallah Seed (1)Bem, Barasa Daniel (1)Coetsee, Elizabeth (1)Dhlamini, Mokhotjwa Simon (1)Dolo, Jappie Jafta (1)Duvenhage, Mart-Mari (1)Jule, Leta T. (1)Koao, Lehlohonolo Fortune (1)Mhlongo, Gugu Hlengiwe (1)Mothudi, Bakang Moses (1)... View MoreSubject
    Photoluminescence (16)
    Cathodoluminescence (9)Phosphors (8)Thin films (6)Energy transfer (5)Annealing (4)Degradation (4)Pulsed laser deposition (4)Sol-gel (4)Thesis (Ph.D. (Physics))--University of the Free State, 2014 (4)... View MoreDate Issued2014 (4)2010 (3)2011 (2)2015 (2)2008 (1)2009 (1)2012 (1)2013 (1)2017 (1)Has File(s)Yes (16)

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