Synthesis of BCNO Phosphor and its Photoluminescent Properties

  • 鄧 偉賢

Student thesis: Master's Thesis


LED solid state lighting has been considered to be the next generation lighting technology due to many advantages such as high energy efficiency environmental friendliness and long lifetime Phosphor is a key material in fabrication of LED lighting devices Most of the phosphors are alkaline earth compounds doped with rare-earth ions as their activators BCNO is a kind of phosphor which is different from most of other phosphors It works without rare-earth ions and can be synthesized in low temperature BCNO thus has advantage that its production does not need rare-earth metal sources and that its production cost can be potentially lower than that of others BCNO phosphor works with BN as its host lattice Carbon and oxide will help BN to enhance the intensity and also increase the wavelength When the amount of carbon too many the carbon impurity will increase and make the wavelength of the phosphor become lower Boron carbon oxynitride (BCNO) phosphors were prepared at 650-7000C under atmospheric pressure by using muffle furnace In this thesis the experimental parameters such as effect of mixing boron and carbon effect were investigated The emission peak can be tuned from 470nm to 540 nm used 370 nm as its lambda excitation The optimized BCNO phosphors may find potential use in white LED applications
Date of Award2014 Jul 25
Original languageEnglish
SupervisorShyan-Lung Chung (Supervisor)

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