Abstract.A Zn-Al metallic target (Al 2 wt.%)has been used to prepare conductive and transparent aluminium-doped Zinc oxide(ZnO:Al) films on PI substrate by direct current reactive magnetron sputtering.The structure,crystallinity,optical properties,electrical properties and adhesion were investigated using a range of techniques,including AFM 、 XRD 、 spectrophotometry、four-point probe and adhesion tester.The optimal films were prepared with a substrate temperature of 150℃，O 2 /Ar ration of 2:38 and sputtering power of 80W.The infrared emission properties of films and the feasibility for military application were also discussed in this paper. All the results to date demonstrate that magnetron sputtering is a costeffective and easy to fabricating technique. IntroductionNowdays there is a great interest in replacing indium tin oxide (ITO) with aluminium -doping ZnO(ZAO),because of this oxide low cost,abundant raw materials,non-toxicity,relatively low deposition temperature and stability in hydrogen plasm.Extensive research work has being done on ZAO films depositied on rigid substrates.Recently preparing ZAO films on organic substrate has generated a renewed interest in it's potential use. Transparent conducting films deposited on polymer substrates have many merits compared with those deposited on glass and silicon substrate;they are lightweight,flexible, robust,of small volume and easy to carry,which are desired properties for a variety of applications such as flat panel display, heat-reflecting coating for energy saving use,low emissivity coating for stealth use etc.In this work,ZAO films were deposited on polyimides being with good heat resistance from Zn-Al metallic target.Detailed information about optical properties,electrical properties as well as structure and morphology were presented.

A laser photoacoustic spectrometer (LPAs) using a branch-tunable carbon dioxide laser source and Q piezoelectric transducer as a detector was employed to study the adsorption of ethanol on a polycrystalline silver surface 3t IO8 K. The strength of bonding beovgn adsorbate and substrate was found to lie between physisorption and chemisorption according to the values of heal of adsorpdon (33.2 kJ mol-I, 38.8 kl mol-', 395 kl mol-' and 44.2 kJ molv1, obtained by thermal-desorption spectroscopy). A fine sp& struc~re of, seven peaks was obtained in the region of 1045-1054 cm-', which benrs s a n g resemblance to that obtained by Fourier-transform infrared spectroscopy for gaseous ethanol. Taking into consideration the resulls of the thermaldesorption study, which suggests weak bonding between ethanol and the silver surfnce. this fine Spectral stmcture was atlributed to the internal torsional rotation of the ethanol adsorbates. To our knowledge, this work is the first report on a torsional-rotational fine spectral structure of ethanol adsorbate on a silver surface. Thus our findings show that torsional-rotational structure exists not only in free molecules as in the gas phase, but also in the adsorbate phase. The sec-up used in this experiment was capable of providing 1 cm-l fine spectral resolution at I L exposure sensitivity. The LPM technique developed here has potential for studying other system as well.