Ag-doped ZnO nanorods synthesized by two-step method

作者：Chen Xian Mei; Ji Yong; Gao Xiao Yong^*; Zhao Xian Wei

来源：Chinese Physics B, 2012, 21(11): 116801.

DOI：10.1088/1674-1056/21/11/116801

• ZnO nanorods
• Ag doping
• thermal decomposition of zinc acetate
• hydrothermal method

A two-step method is adopted to synthesize Ag-doped ZnO nanorods. A ZnO seed layer is first prepared on a glass substrate by thermal decomposition of zinc acetate. Ag-doped ZnO nanorods are then assembled on the ZnO seed layer using the hydrothermal method. The influences of the molar percentage of Ag ions to Zn ions (R-Ag/zn) on the structural and optical properties of the ZnO nanorods obtained are carefully studied using X-ray diffractometry, scanning electron microscopy and spectrophotometry. Results indicate that Ag ions enter into the crystal lattice through the substitution of Zn ions. The (002) c-axis-preferred orientation of the ZnO nanorods decreases as R-Ag/zn increases. At R-Ag/zn > 1.0%, ZnO nanorods lose their c-axis-preferred orientation and generate Ag precipitates from the ZnO crystal lattice. The average transmissivity in the visible region first increases and then decreases as R-Ag/zn increases. The absorption edge is first blue shifted and then red shifted. The influence of Ag doping on the average head face, and axial dimensions of the ZnO nanorods may be optimized to improve the average transmissivity at R-Ag/zn < 1.0%.

• 出版日期2012-11
• 单位郑州大学