Thin layer polycrystal oxides (amorphous and micro-crystalline) TiO2(F
e2O3, SnO2 and In2O3 . Sn) are prepared by the organometallic chemical
vapor deposition (MO-CVD) technique at 300-410 degrees C. Their struc
tures, surface states and photoelectrochemical properties are describe
d by X-ray diffraction (XRD), electron microscopy and three electrode
methods. The experiments indicate that these thin layer oxides are sui
table for formly transparent conductive coating to serve as photoelect
rodes and photocatalysts for splitting of water.