MOO3- IN2O3 BINARY OXIDE THIN FILM DEPOSITION FOR TCO APPLICATION IN SOLAR CELL

Transparent conducting binary MoO3-In2O3 as-deposited and annealed thin films, well suited for window layers were fabricated by employing a simple and inexpensive spray pyrolysis technique using perfume atomizer. The effect of Mo concentration (0.2-3 at. %) on the structural, morphological, optical and photoluminescence properties of the binary oxide thin films have been investigated. XRD reveals that the films are polycrystalline with cubic bixbyite structure. An average visible optical transmission of 97% obtained and is well extended in NIR region. A wide optical band gap (for as-deposited-2.84 eV, annealed-3.61 eV) makes the film suitable for solar cell applications. The scanning electron microscope (SEM) measurements show that the surface morphology of the film changes with Mo concentration and AFM ascertains the surface roughness.