STRUCTURAL AND ACOUSTIC PROPERTIES OF ZNO THIN-FILMS PREPARED BY SPRAY

ZnO thin films have been grown on glass substrates using the spray pyr olysis technique. Tile depositions were carried out in tile range of s ubstrate temperatures from 400 to 500 degrees C. Highly c-asis oriente d ZnO films, having a strong (002) X-ray diffraction line, are obtaine d at lower temperatures (400 to 420 degrees C). Film surfaces were ana lysed by contact Atomic Force Microscopy (AFM). On the other hand, we have used scanning microscopy performed at a frequency of 570 MHz to r each a microechography and acoustic signature V(z) of our samples in o rder to understand their dualities.