A temperature dependant crystal orientation transition of cadmium oxide films deposited by metal organic chemical vapour deposition

► Polycrystalline cadmium oxide films were deposited over a narrow temperature range. ► X-ray diffraction peaks highlighted a crystal orientation transition. ► A mechanism is proposed relating to the melting point of cadmium 320.9 °C. ► Electrical properties achieved Rs=18.0 Ω/sq, μ=60.0 cm2/V s. ► The (111) oriented films yielded high transmittance in the visible region.