Author(s)

Tingting Li, Jiaolian Luo, Zentaro Honda, Takeshi Fukuda, Norihiko Kamata

Graduate School of Science and Engineering, Saitama University, Saitama, Japan.

One of promising phosphors in vanadium oxide family, Zn₃V₂O₈, was successfully synthesized by a solid state reaction of ZnO and V₂O₅. Characterization by XRD, photoluminescence (PL) and SEM was done for samples with different temperature and time in the sintering process. Residual percentage of secondary Zn₂V₂O₇ phase, subsidiary ZnO and Zn₄V₂O₉ phases was dependent on the sintering condition. The crystalline purity (CP) was defined by the integral intensity ratio of Zn₃V₂O₈ phase and that of residual phases in XRD spectra, which showed a reasonable correspondence to the PL quantum yield (QY) of each sample. The highest QY exceeding 50% was obtained by the sintering condition of 750?C for 48 h. It turned out that the CP value is a good measure of high QY, which can be utilized for developing phosphor materials and controlling their processes.

Zn₃V₂O₈ Phase; XRD; Crystalline Purity; Internal Quantum Efficiency; Photoluminescence

T. Li, J. Luo, Z. Honda, T. Fukuda and N. Kamata, "Sintering Condition and Optical Properties of Zn₃V₂O₈ Phosphor," Advances in Materials Physics and Chemistry, Vol. 2 No. 3, 2012, pp. 173-177. doi: 10.4236/ampc.2012.23026.