Oxide films SILAR-grown

SILAR-grown ZnO films have been tested for gas sensor applications.29 The ZnO films, doped with tin for this purpose, were grown from a mixture of dilute zinc sulfate, sodium hydroxide, and sodium tin(IV)oxide solutions. The final step, resulting in the oxide film, was treatment of the substrate and film in a nearly boiling water bath. The N02 gas sensing properties were tested for films doped with Al, Cu, Pd, and Sn, but only the film doped with tin exhibited sensitivity toward N02. The sensitivity of the ZnO Sn film was 5% /ppm after rapid photothermal processing (RPP). The best sensitivity was obtained when the tin concentration was 5-10%.29... 

---