BaO-ZnO-B2O3-SiO2계 유리에서 TiO2의 첨가가 색변환 유리의 광특성에 미치는 영향

Abstract

The effect of titanium dioxide (TiO2) on the properties of color conversion glasses was examined for glasses based on BaO-ZnO-B2O3-SiO2. One glass sample, containing 25 mol% of each component, was used as a reference; the other three glass samples contained 1, 3, and 5 mol% TiO2, respectively. The four color conversion glass samples were prepared by sintering a mixture of glass frits and a YAG:Ce+ phosphor. The characteristics of the color conversion glass samples, such as luminous efficacy, luminance, CIE (Commission International de I'Eclairage) chromaticity, CCT (Correlated Color Temperature), and CRI (Color Rendering Index) were analyzed according to the PL spectrum. The refractive index of the glass samples was found to increase with the titanium dioxide content. In conclusion, luminous efficacy of color conversion glasses increased as the content of TiO2 was raised in the glass matrix. ? Materials Research Society of Korea.