Jong-Ha Moon

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To reduce the variance of color temperature among packages and the spatial color temperature variance in the package, we adopted a unique phosphor conformal coating technique in the packaging process, thereby fabricating the self-positioned phosphor layer. Additionally, to acquire the spatial color uniformity without considerable shrinkage of luminous(More)
The effects of Na-citrate on the morphology change of ZnO films, grown on ZnO buffered glass substrates by hydrothermal synthesis at 90 degrees C and at pH 10.9, have been investigated. Dense and smooth ZnO film consists of ZnO nano-rods that have flat ends was grown with Na citrate. However, very rough ZnO film consists of ZnO nano-rods that have sharp(More)
The nanocrystalline Zinc Sulfide (ZnS) thin films were prepared on glass substrates by chemical bath deposition (CBD) method using aqueous solutions of zinc acetate, thiourea and tri-sodium citrate in alkaline medium at 80 degrees C. The tri-sodium citrate acts as a complexing agent. The effects of complexing agent and annealing atmosphere (95%N2 + 5%H2S)(More)
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