Preparation of ZnO Films with Rod Crystal Arrays by Aqueous Solution Method

Highly c-oriented ZnO fihns were prepared on ZnO buffer-coated ITO substrate by a solution method at 80℃. The effects of precursor concentration and growth time on the morphology of the fihns were investigated. The structure, morphology were characterized by using X-ray diffraction, transmission electron microscope, scanning electron microscope, field emission scanning electron microscope. The results show that the morphology of ZnO fihns is strongly dependent on the precursor concentration and growth time, all the ZnO rods belong to the hexagonal wurtzite structure . The growth manner of ZnO is layer by layer. Special lath-like crystals formed by secondary growth when growth tune was 48h.