EFFECTS OF THE CARRIER GAS ON PROPERTIES OF SNO2 DEPOSITED BY PYROLYSIS

The electrical, optical and structural properties of fluorine doped po lycrystalline SnO2, deposited by the pyrosol method using different ty pes of carrier gas, have been investigated. Measurements of resistivit y, optical transmittance, X-ray diffraction and SEM microscopy have be en done on a series of samples deposited at different temperatures and using oxygen or nitrogen alternatively as carrier. We have found that samples deposited using oxygen present lower resitivity in the comple te range of temperatures. The specular optical transmittance does not depend too much on the carrier gas. We have looked for correlations be tween the electro-optical properties and the structural properties.