Get access

Diffuse light-scattering properties of nanocracked and porous MoO3 films self-formed by electrodeposition and thermal annealing

Authors

  • Yeong Hwan Ko,

    1. Department of Electronics and Radio Engineering, Institute for Laser Engineering, Kyung Hee University, 446-701 Yongin, Republic of Korea
    Search for more papers by this author
  • Ganji Seeta Rama Raju,

    1. Department of Electronics and Radio Engineering, Institute for Laser Engineering, Kyung Hee University, 446-701 Yongin, Republic of Korea
    Search for more papers by this author
  • Sunkook Kim,

    1. Department of Electronics and Radio Engineering, Institute for Laser Engineering, Kyung Hee University, 446-701 Yongin, Republic of Korea
    Search for more papers by this author
  • Jae Su Yu

    Corresponding author
    1. Department of Electronics and Radio Engineering, Institute for Laser Engineering, Kyung Hee University, 446-701 Yongin, Republic of Korea
    • Phone: +82 31 201 3820, Fax: +82 31 206 2820
    Search for more papers by this author

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.

Ancillary