Mo-doped indium oxide films by dip-coating: Synthesis, microstructure and optical properties

Francesca Nanni, Francesca Romana Lamastra, Fabio Franceschetti, Francesco Biccari, Ilaria Cacciotti

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Molybdenum doped indium oxide (In2-xMoxO3, IMO) is widely used in many electronic and optoelectronic devices due to its excellent electrical properties and optical transparency. In this work, a first attempt to produce IMO films by sol-gel dip coating was reported, starting from different reagents (i.e. indium nitrate or indium chloride and molybdenum chloride or ammonium molybdate as In and Mo sources, respectively). The influence of different reagents, solvents and annealing atmospheres (i.e. air and N2) on final coating properties was investigated in order to properly select the optimal process parameters. The morphological, microstructural and optical properties of the produced coatings were evaluated by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and UV-vis spectroscopy. The best performances, in terms of microstructure and transparency, were obtained for films produced by dip coating the indium nitrate and molybdenum chloride based solutions (In nitrate concentration 0.1-0.2 M), with the addition of a low amount of PEG, followed by annealing at 500 C. The produced coatings consisted of monophasic In2O3and were characterised by a uniform, homogeneous and cracks free surface, and high transmittance values in the vis range (i.e. 85-98%). © 2013 Elsevier Ltd and Techna Group S.r.l.
Original languageEnglish
Pages (from-to)1851 - 1858
Number of pages8
JournalCeramics International
Issue number1 PART B
Publication statusPublished - Jan 2014
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Nanni, F., Lamastra, F. R., Franceschetti, F., Biccari, F., & Cacciotti, I. (2014). Mo-doped indium oxide films by dip-coating: Synthesis, microstructure and optical properties. Ceramics International, 40(1 PART B), 1851 - 1858.