Influence of Different Atomic Percentage of Silver Doped Nano Zinc Oxide on Titanium Dioxide Seeded Substrate

Non-doped ZnO/TiO2 and Silver (Ag) doped ZnO/TiO2 nanostructures thin film were successfully synthesized on glass substrate by using sol-gel spin coating technique for deposition of TiO2 seed layer and solution immersion method for growth of Ag-doped ZnO/TiO2 nanostructure. Different atomic percentage (at%) which is 0.5, 1.0, 1.5, 2.0 and 2.5 at% of Ag doped were added in 0.4 M of Zn solution. The EDX result revealed that the sample was composed of Zn, O and Ag elements which confirmed the existence of Ag element in the sample. The XRD spectra shows that the intensity of the (002) peak of 0.5 at % Ag-doped ZnO/TiO2 was the highest compared to other samples and all the samples revealed polycrystalline structure belonging to the ZnO hexagonal wurtzite type. The UV-vis absorbance also indicates that 0.5 at% Ag-doped ZnO/TiO2 has the highest absorbance and non-doped ZnO/TiO2 displayed the lowest absorbance compared to the other sample. Thus, 0.5 at% of Ag-doped ZnO/TiO2 is the best candidate for optical application due to the higher intensity and greater absorbance.

[1]  H. Salamati,et al.  Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles , 2015, 1508.00382.

[2]  A. Boudrioua,et al.  Effects of Low Ag Doping on Physical and Optical Waveguide Properties of Highly Oriented Sol-Gel ZnO Thin Films , 2015 .

[3]  A. N. Afaah,et al.  Effect of molarity of TiO2 seeded-template to the growth of ZnO nanostructures , 2015 .

[4]  Joshua M. Pearce,et al.  A novel synthesis of tin oxide thin films by the sol-gel process for optoelectronic applications , 2015 .

[5]  Xinhua Pan,et al.  Enhanced UV detection performance using a Cu-doped ZnO nanorod array film , 2014 .

[6]  R. Vannier,et al.  Preparation and characterization of p–n heterojunction CuBi2O4/CeO2 and its photocatalytic activities under UVA light irradiation , 2014 .

[7]  R. Zamiri,et al.  Far-infrared optical constants of ZnO and ZnO/Ag nanostructures , 2014 .

[8]  T. Hsueh,et al.  Vertical p-type Cu-doped ZnO/n-type ZnO homojunction nanowire-based ultraviolet photodetector by the furnace system with hotwire assistance. , 2014, ACS applied materials & interfaces.

[9]  Li-ping Zhu,et al.  Colloidal chemically fabricated ZnO : Cu-based photodetector with extended UV-visible detection waveband. , 2013, Nanoscale.

[10]  M. H. Mamat,et al.  Thermal stability and phase transformation of TiO2 nanowires at various temperatures , 2013 .

[11]  H. Yadav,et al.  Sol–gel derived Ag-doped ZnO thin film for UV photodetector with enhanced response , 2013, Journal of Materials Science.

[12]  Jinhua Ye,et al.  Vertically aligned ZnO nanowire arrays tip-grafted with silver nanoparticles for photoelectrochemical applications. , 2013, Nanoscale.

[13]  T. Hsueh,et al.  Fabrication of gas sensor based on p-type ZnO nanoparticles and n-type ZnO nanowires , 2013 .

[14]  J. Yu,et al.  Optical absorption enhancement of embedded Ag nanoparticles with ZnO nanorod arrays , 2011 .

[15]  B. Kumar,et al.  p-type K-doped ZnO nanorods for optoelectronic applications , 2011 .

[16]  Alfons Schulte,et al.  Synthesis and Characterization of Ag- or Sb-Doped ZnO Nanorods by a Facile Hydrothermal Route , 2010 .

[17]  Giorgio Sberveglieri,et al.  First Example of ZnO−TiO2 Nanocomposites by Chemical Vapor Deposition: Structure, Morphology, Composition, and Gas Sensing Performances , 2007 .

[18]  Yanfa Yan,et al.  Doping of ZnO by group-IB elements , 2006 .

[19]  Robert Freer,et al.  The roles played by Ag and Al dopants in controlling the electrical properties of ZnO varistors , 1995 .

[20]  Horst Weller,et al.  Photochemistry and radiation chemistry of colloidal semiconductors. 23. Electron storage on zinc oxide particles and size quantization , 1988 .

[21]  M. A. Mahdi,et al.  Fabrication and characterization of ZnO nanorods/p-6H–SiC heterojunction LED by microwave-assisted chemical bath deposition , 2013 .

[22]  A. Raychaudhuri,et al.  Electrodeposition of aligned arrays of ZnO nanorods in aqueous solution , 2008 .

[23]  S. Martin,et al.  Environmental Applications of Semiconductor Photocatalysis , 1995 .