| 초록 |
To investigate the effect of glass composition on the properties of color conversion glasses for white LED, five BaO-ZnO-B2O3-SiO2 glasses, comprising different mol % of each four component, were tested. There is one glass as a reference, comprising 25 mol% of each component and other four glasses, comprising 40 mol% of one component and 20 mol% of other three components in BaO-ZnO-B2O3-SiO2 glasses. Five color conversion glasses were made by sintering the mixture of these glass frits and YAG phosphor. The content of YAG phosphor of color conversion glasses was kept at 5 wt% and the sintering temperatures of them were adapted with the consideration of softening temperature of each glass. Characteristics of color conversion glasses, such as Luminous efficacy, luminance, CIE chromaticity, CCT and CRI were analyzed according to PL spectrum. Luminous and color characteristics were dependent on the ratio of each component in BaO-ZnO-B2O3-SiO2 glasses. |
