Vertical Target Pulsed Laser Deposition Of Nano-film,

This article develops a vertical target pulsed-laser deposition (VTPLD) method to prepare nanoparticles and nanofilms. We adjust laser beam to penetrate a piece of this glass that is not the laser-absorbing material, onto a ZnO target. The target surface is ablated, plasma sprays out and finally deposits on the surface of the transparent substrate. And Zinc oxide nanometer thin films on glass substrates were prepared by VTPLD at room temperature in atmosphere. The surface morphology and structural information of the films were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The property of photoluminescence of film was also studied. The results showed that ZnO nanometer thin film and ZnO microporous continuous thin film were obtained under different laser power of 13W and 21W, respectively. There is main peak at (002) showing the ZnO film has better orientation along c axis. Photoluminescence intensity changes as the function of laser power, with the maximum peak at 412nm presents blue emission.Pulsed-laser deposition (PLD) is a new and very powerful method for preparation of surface enhance Raman scattering (SRES) active mental nanofilm.Furthermore, silver nanofilms were produced by VTPLD through the change of the laser current density. The microstructure of the films has been detected by SEM, XRD and electronic microscope. The results indicated that the silver particles were uniform and spheric, the average particle size was nm.In the end, the surface enhanced Raman scattering application is presented. The SERS spectra analysis revealed that silver nanofilms were good SERS active substrates.