• Login
    Search 
    •   KovsieScholar Home
    • Natural and Agricultural Sciences
    • Search
    •   KovsieScholar Home
    • Natural and Agricultural Sciences
    • Search
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Search

    Show Advanced FiltersHide Advanced Filters

    Filters

    Use filters to refine the search results.

    Now showing items 1-10 of 26

    • Sort Options:
    • Relevance
    • Title Asc
    • Title Desc
    • Issue Date Asc
    • Issue Date Desc
    • Results Per Page:
    • 5
    • 10
    • 20
    • 40
    • 60
    • 80
    • 100
    Thumbnail

    Theoretical and experimental study of core-shell structured ZnO/ZnS and growth mechanism of un-doped and doped ZnO nanomaterials 

    Jule, Leta T. (University of the Free State (Qwaqwa Campus), 2017-12)
    There is currently widespread interest among researchers in ZnO-ZnS coreshell nanorods as electrodes in prototype solar cells. ZnS has been proposed as a suit- able inorganic sensitizer to ZnO because ZnO and ZnS when in ...
    Thumbnail

    Synthesis and characterization of strontium (Sr), barium (Ba) and calcium (Ca) aluminate phosophors doped with rare earth ions 

    Mothudi, Bakang Moses (University of the Free State, 2009-08)
    The luminescent and structural properties of the alkaline earth aluminate phosphors prepared by solid state reaction, combustion and sol-gel methods are discussed. The Solid state and Sol-gel methods required much longer ...
    Thumbnail

    Luminescence investigations of CaS:Eu2+ powder and pulsed laser deposited thin films for application in light emitting diodes 

    Nyenge, Raphael Lavu (University of the Free State, 2015-06)
    The main objective of this thesis was to investigate the luminescent properties of commercial CaS:Eu2+ powder and pulsed laser deposited thin films for application in light emitting diodes. X-ray diffraction (XRD), X-ray ...
    Thumbnail

    Tunable multicolour emission from dysprosium-doped mixed rare-earths oxyorthosilicate nanophosphors for application in ultraviolet-pumped multicolour and white light emitting diodes 

    Ogugua, Simon Nnalue (University of the Free State, 2015-02)
    Phosphors have many uses today in applications such as electronic information displays, solid state lighting, solar cells, advertising and theft prevention. By using urea-assisted solution combustion method, we prepared ...
    Thumbnail

    Luminescence investigation of trivalent rare earth ions in sol-gel derived SiO₂ and ZnO co-doped SiO₂:Pr³⁺ 

    Mhlongo, Gugu Hlengiwe (University of the Free State, 2011-05)
    Tb3+-Pr3+ , Ce3+-Pr3+ , and Eu3+-Pr3+ ion pairs co-doped in SiO2 were successfully synthesized using a sol gel method to produce rare earth activated oxide nanophosphors. Green emitting ZnO nanoparticles were also successfully ...
    Thumbnail

    Sol-gel synthesis of and luminescent properties of Pr³⁺ in different host matrices 

    Mbule, Pontsho Sylvia (University of the Free State, 2009-11)
    Luminescent ZrO2:Pr3+ , SiO2:Pr3+, ZnO:Pr3+ and ZnS:Pr3+ nanophosphors were synthesized by a sol-gel method, dried, ground and annealed in air at 600oC (SiO2:Pr3+, ZrO2:Pr3+, ZnO:Pr3+ and ZnS:Pr3+) or 280oC (ZrO2:Pr3+). ...
    Thumbnail

    Luminescence properties of Y2O3:Bi3+ as powder and thin film phosphor for solar cell application 

    Rasha, Mohmmed Jafer (University of the Free State, 2015-07)
    The luminescent properties of the bismuth doped yttrium oxide (Y2-xO3:Bix) phosphor material was investigated as a powder and as thin films for possible application as a down-conversion material for solar cells. The goal ...
    Thumbnail

    Novel ZnO nanostructures: synthesis, growth mechanism, and applications 

    Molefe, Fokotsa Victor (University of the Free State (Qwaqwa Campus), 2014-12)
    The ZnO nanostructures were successfully synthesized by chemical bath deposition method (CBD) to study the influence of parameters such as reaction temperature, time, precursor concentration and the annealing temperature ...
    Thumbnail

    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 ...
    Thumbnail

    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 ...
    • 1
    • 2
    • 3

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
     

     

    Browse

    All of KovsieScholarCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CommunityBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Discover

    AuthorNoto, Luyanda Lunga (2)Ahmed, Hassan Abdelhalim Abdallah Seed (1)Annah, Lephoto Mantwa (1)Bem, Barasa Daniel (1)Biggs, Mart-Mari (1)Coetsee, Elizabeth (1)Dhlamini, Mokhotjwa Simon (1)Dlamini, Sipho Thapo Solomon (1)Dolo, Jappie Jafta (1)Duvenhage, Mart-Mari (1)... View MoreSubject
    Photoluminescence (26)
    Cathodoluminescence (12)Phosphors (12)Thin films (7)Luminescence (6)Combustion method (5)Energy transfer (5)Pulsed laser deposition (5)Sol-gel (5)Thermoluminescence (5)... View MoreDate Issued2020 - 2022 (2)2010 - 2019 (20)2008 - 2009 (4)Has File(s)Yes (26)

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback