PREPARATION OF ZNO FILMS WITH PREFERENTIAL ORIENTATION BY SOL-GEL METHOD

ZnO films were prepared on silica glass substrates by the sol-gel meth od from Zn(CH3COO)(2) . 2H(2)O-2-methoxyethanol solutions containing m onoethanolamine (MEA) or diethanolamine (DEA). Smooth and transparent ZnO films were obtained by heating at temperatures from 200 to 500 deg rees C for 10 min after each coating and finally at the same temperatu res far 1h. The films prepared from coating solutions containing MEA w ere strongly oriented along the (002) plane. The effects of heating te mperature and ethanolamines on the him morphology, grain size distribu tion and crystallographic orientation are discussed based on X-ray dif fraction and scanning electron microscopy.