Preparation and characterization of CuO doped Bi2O3–B2O3–BaO–ZnO glass system for transparent dielectric layer

The electrical, thermal, optical, and morphological properties of CUO doped Bi2O3–B2O3–BaO–ZnO glasses were studied as a PbO-free, low firing transparent dielectric layer for plasma display panels (PDP). CuO improved the transmittance of Bi2O3–B2O3–BaO–ZnO by up to 84% in the visible region, eliminating a yellowish color typical of Bi2O3–B2O3–BaO–ZnO. A slight absorption within the near infrared (NIR) region was also observed. The glass transition temperature (Tg), thermal coefficient of expansion (TCE), and root-mean square (rms) roughness of 0.005 wt% CuO doped Bi2O3–B2O3–BaO–ZnO were found to be 455 °C, 81.4 × 10−7/K, respectively, and 162 ± 14 Å, which satisfied the requirements for a transparent dielectric layer for PDP application.