Spectroscopic analysis of WO$_{3}$ for sensor applications

POSTER

Abstract

Samples of WO$_{3}$ thin films for use in gas sensors were grown using RF magnetron sputtering at a number of different substrate temperatures and Ar:O$_{2}$ pressure ratios. The structural properties of the samples were investigated, both experimentally and theoretically, with the goal of determining how variations in the above preparation parameters effect structural changes in the sensor materials. Such structural changes are of crucial importance to the question of improving the sensitivity, specificity, and durability of WO$_{3}$ based gas sensors. Experimental characterization was performed using the techniques of FT-IR, Raman, AFM, and XRD. The theoretical work involved software simulation techniques using Gaussian 09W$_{\mbox{{\textregistered}}.}$

Authors

  • Jose Luis Enriquez

  • Felicia Manciu

  • William Durrer

    Department of Physics

  • Chintalapalle Ramana

  • Mikhail Zhernenkov

    Angelo State University Department of Physics, Department of Electrical and Computer Engineering, Texas Tech University, The University of Texas at San Antonio, Univeristy of Central Florida-College of Optics and Photonics, BAE Systems, University of Alberta Department of Physics, Istanbul University Department of Physics, Texas Tech University Department of Physics, Istanbul University, Beyazit, University of Alberta, Edmonton, UTD, TAMS at UNT, Department of Mechanical Engineering, The University of Texas at El Paso, El Paso, TX 79968, College of Nanoscale Science and Engineering, University at Albany, Dept. of Physics, University of New Orleans, University of Texas at Arlington, Prairie View A\&M University, Chemistry, UTSA, Sciprint.org, Texas Tech University Department of Electrical and Computer Engineering, Texas State University, Punjab U, Dept. of Mechanical Engineering, University of Texas, Dept. of Physics, Texas State University, Department of Physics, University of Texas at Dallas, Richardson TX 75080, Department of Physics, Texas A\&M University, College Station, Texas 77843-4242, Department of Physics, University of California, San Diego, California 92093, Universidade Federal Fluminense, Volta Redonda, RJ, Brazil, Universidade de Sao Paulo, Sao Paulo, SP, Brazil, Department of Physics, Texas A\&M University, University of Colorado at Colorado Springs, Federal University of Rio Grande do Norte, University of Texas Arlington, Harvard-Smithsonian Center for Astrophysics, Max Plank Institute, Dresden, Germany, Education Consultant, APS, The University of Texas M. D. Anderson Cancer Center, Department of Physics, Texas A\&M University, College Station, TX 77843, LANSCE, Los Alamos National Laboratory