Diffuse light-scattering properties of nanocracked and porous MoO 3 films self-formed by electrodeposition and thermal annealing

Yeong Hwan Ko, Ganji Seeta Rama Raju, Sunkook Kim, Jae Su Yu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

We report the diffuse light-scattering properties of nanocracked and porous molybdenum trioxide (MoO3) films deposited on indium tin oxide (ITO) coated glass as a transparent conductive oxide (TCO), caused by the enhanced light diffraction due to high surface roughness as well as narrow slit-like structures. By utilizing the electrodeposition and thermal annealing processes, the hydrous and amorphous molybdenum oxide films were changed into crystallized MoO3 films with self-formed nanocracks and rough surface. From the theoretical analysis of the light behavior passing through the morphology of MoO3 films, a considerable diffuse light scattering was predicted. In order to optimize the light-scattering property, the structural and optical characteristics of MoO3 films on ITO/glass at different applied voltages were investigated. For a proper applied voltage of 2 V, widely distributed nanocracks and rough surface were observed, leading to the enhanced diffuse transmittance of 54% at λ ∼ 410 nm. Additionally, the fabricated MoO3 films on ITO/glass exhibited a more hydrophilic surface.

Original languageEnglish
Pages (from-to)2161-2166
Number of pages6
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume209
Issue number11
DOIs
StatePublished - Nov 2012

Keywords

  • diffuse light scattering
  • electrodeposition
  • molybdenum trioxide
  • nanocracked
  • thermal annealing

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