Thin films of metal oxides of Co and the Co-Fe-Cr system were deposited on a commercial soda-lime-silica float gray glass from an aerosol generated by ultrasonic excitation, using acetylacetonates as the source of the aerosol, Thermogravimetric (TG), derivative thermogravimetric (DTG) and differential thermal analysis (DTA) studies performed prior to the film deposition revealed a principal difference between the thermal decomposition of acetylacetonates and the nitrates used previously, influencing greatly the properties of the synthesised films. Deposited films were characterised by the measurement of their optical properties that are vital for privacy purposes (i.e., reflectance, transmittance), and of their surface roughness and thickness measurements. Crystallinity of films has been investigated and chemical durability tests have been performed, Results of these investigations are presented and the properties of films are compared with those obtained from films deposited previously from a nitrate aerosol generated either pneumatically or by means of ultrasonic excitation.