EFFECT OF SN CONCENTRATION IN THE PRECURSOR SOLUTION ON THE GROWTH OF SPRAYED SNO2 FILMS

Tin oxide thin films were deposited by the spray pyrolysis technique on Corning 7059. The X-ray diffraction results indicated that all deposited films were polycrystalline with a tetragonal (rutile) structure. The films showed preferred [200] orientation irrespective of the deposition conditions for a fixed solution composition. Hence, attempts were made to control the preferred growth by changing the composition of the aqueous solution. It seems that by varying the amount of hydrated SnCl4 one can achieve better control on the preferred orientation. The experimental results have been explained on the basis of the calculated structure factors. A correlation between the structural and electrical properties is also discussed.