Papers by Author: Gui Zhen Liu

Abstract: Na-doped ZnO thin films on Si (100) substrates and on pure ZnO buffer layers prepared by sol-gel method, with the pure ZnO buffer layer annealing at 1073K for 90 min. X-ray diffraction (XRD) analyses revealed that all the films had a polycrystalline wurtzite structure and high c-axis preferred orientation. Photoluminescence(PL) spectra showed that the thin films produced strong emissions near ultraviolet(UV) and weak defect-related deep-level emission in visible regions. In addition, the effects of pure ZnO buffer layers on the structural and optical properties are discussed.

Abstract: The effects of a few added components, i.e. SnO2, Cr2O3 and Fe2O3, in porcelain glaze on thermal conductivity of porcelain glaze are studied in this paper. The thermal conductivities of several porcelain glaze samples with different contents of SnO2, Cr2O3 and Fe2O3 were measured with a special measuring apparatus at room temperature. The theoretical explanation for these measurement results is also sought according to the theory on heat transfer in solid materials, briefly.