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Optical Properties of Co3O4-Doped ZnO–B2O3–SiO2–Al2O3 Glass System for a Transparent Dielectric Layer

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There has been a need to improve color temperature without using asymmetric cell structures using transparent dielectric layers with variation of Co3O4 contents in plasma display panel (PDP). In this study, ZnO–B2O3–SiO2–Al2O3 glasses with variations of the Co3O4 content (0, 0.5, 1.0, 1.5, and 2.0 wt%) were fabricated and the optical properties of these glasses were characterized. As the content of Co3O4 increased, the transmittance of the red region (from 580 to 780 nm) decreased more than of the blue region (from 380 to 500 nm). This change of transmittance induced the transition of the coordination of the color temperature toward the blue region. Therefore, the addition of 2 wt% Co3O4 can improve the color temperature from 6087 to 7378 K and the result was confirmed using simulation.

Document Type: Research Article


Affiliations: 1: Department of Chemical Engineering, Hanyang University, Seoul 133-791, Korea 2: School of Materials Engineering, Inha University, Incheon 402-751, Korea

Publication date: December 1, 2009

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