Synthesis and characterization of ZnO nanostructures on noble-metal coated substrates

摘要: Abstract In this work, ZnO nanostructures were fabricated on noble-metal (Au, Ag and Au–Ag alloys) coated silicon substrates by applying pulsed laser deposition. The samples prepared at a substrate temperature of 550 °C, an oxygen pressure 5 Pa, fluence 2 J cm−2 – process parameters usually used for deposition smooth dense thin films. metal layer's role is substantial the preparation nanostructures. Heating changed morphology layer and, subsequently, nanoparticles formed. use different particles resulted in morphologies properties synthesized. was related to alloy's content catalyst layer. It found that evolved from nanorods nanobelts as ratio Au/Ag alloy varied. small quantity (Au3Ag) predominantly nanorods. A higher (AuAg2) growth structure nanobelts.