The structural and optical properties of gamma-FeOOH thin film grown with CBD method

Ozdemir O., Meydaneri F., KARİPER İ. A.

OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, vol.8, no.7-8, pp.727-732, 2014 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 8 Issue: 7-8
  • Publication Date: 2014
  • Journal Name: OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.727-732
  • Keywords: CBD method, Crystal growth, Optical properties, pH, Microstructure, IRON-OXIDE, ELECTROCHEMICAL SYNTHESIS, CRYSTALLINE, ALPHA-FE2O3, GAMMA-FE2O3, DEPOSITION, PHASE
  • Erciyes University Affiliated: Yes

Abstract

gamma-FeOOH thin films were produced by Chemical Bath Deposition (CBD) method at pH: 5 onto amorphous glass substrates. Structural properties of gamma-FeOOH thin film were analyzed with X-ray diffraction (XRD). Chemical analysis and surface image of thin film were investigated with EDX, SEM, respectively. Optical properties were investigated via UV-VIS spectrophotometer. gamma-FeOOH (lepidocrocite) crystal is orthorhombic structure and the XRD peak corresponding to the gamma-FeOOH is enhanced to (1 1 1) plane. The allowed direct and allowed indirect optical band gaps (Eg), optical transmission (T%), reflectivity (R%), absorption, refraction index (n), extinction coefficient (k), dielectric constant (epsilon) of the thin film were found to be 2.00 and 1.63 eV, 36.39 %, 24.86 %, 0.43, 2.98, 0.03 and 1.76, respectively.