International Journal on Recent and Innovation Trends in Computing and Communication ISSN: 2321-8169 Volume: 2 Issue: 5 1148– 1151 _______________________________________________________________________________________________ 1148 IJRITCC | May 2014, Available @ http://www.ijritcc.org _______________________________________________________________________________________ XRD, FTIR and the Optical Studies of Pure Polystyrene Film 1 K.Maragatham Scholar,Dept.of Physics Karpagam University Coimbatore, India 2 S.Muruganand Assistant Professor,Dept.of E&I Bharathiar University Coimbatore, Indian. drsmbu2010@gmail.com 3 N.Manikandan Research scholar Dept.of E & I Bharathiar University Coimbatore, Indian. scint.manikandn.drdo@gmail.com Abstract — Polystyrene thin films are prepared by solution growth technique using glass substrates. Polystyrene solution is prepared by dissolving 3g of polystyrene in the 100cc of benzene. Pure thin films are subjected to XRD, FTIR. XRD shows the amorphous nature of thin films. The FTIR spectrum gives about the presence of functional groups in the PS thin films. Also the optical properties polystyrene have been studied.. The optical properties of thin films were analyzed using their transmission spectra. From the original PS films wave length spectra have been calculated and dielectric formulas are discussed. Keywords- Pure Ps, optical properties, XRD, FTIR. __________________________________________________*****_________________________________________________ I. INTRODUCTION The science and technology of thin film have made revolutionary changes in microelectronics industries and even today they continue to be recognized globally as frontier area of the research. Thin film technology gains paramount importance since it unravel the complex nature of electronics systems. The obvious reason for preparing materials in the thin film form and studying their properties is that , the two film surfaces are very close to each other and they can have decisive influence on the internal physical properties. The properties differ in a profound way from those of a bluk material. The technical interest in the study of the properties of thin film has resulted in the invention of important devices such as, solar cells, active and passive micro miniaturized components ,magnetic memory devise, reflection and antireflection coating etc.,. The polymers are extensively used as insulators for both heat and electricity and therefore are of much importance in industry. Due to their low electrical conductivity, low dielectrically loss and good chemical stability and even at high temperatures, they are particularly suited for component industry for insulation interconnection. In recent year polymer increasing applications in electronic industry for preparing different devices. since they are having good photovoltaic characterizations, they are also used for solar cell applications II. EXPERIMENTAL TECHNIQUES The polymer has long chain and high molecular weight have very complex and considerable variety of physical and chemical structure. Most of the polymer have mixture of polycrystalline and amorphous region, depends on ration of mixture of impurities the strong method is incorporated. the structurally reproducible and pinhole-free film with minimum ageing effects can be produced by the solution growth technique[4-5].it has explained preparation of polystyrene and iodine doped polystyrene film, and structural, optical dielectric, conduction and breakdown properties of polymer film has been described. Ease Solution Growth Technique Solution Growth Technique Solution Growth Technique Solution Growth Technique III. SOLUTION GROWTH TECHNIQUE A. Solution growth technique The technique used for deposition of thin film in the present study is solution growth, which involves the isothermal immersion of the substrate into the polymer solution of suitable concentration held at a constant temperature for the certain time. The rate of growth and the thickness of the film depends on the nature of the substrate, the concentration, and temperature of the solution and also on the time for which the substrate is left immersed in the solution. B. Sample preparation The substrate should also have an appropriate heat conductivity to ensure constant temperature of the surface and sufficient heat removal during the operation of electronics devices. The surface of the substrate should be flat and smooth to form the glass slide used in the study is 2.5X7.5c.m -2 . IV. CHARACTER STUDY The pure and iodine doped polystyrene films were characterized optically be recording the transmittance and