“…The advancement in nanostructured oxides has attracted new interest in exploiting these materials as components for nano scale light emitting devices (He et al 2006). Besides other material properties, photoluminescence (PL) properties of SnO 2 can be manipulated by varying the size, defects such as tin interstitials or oxygen vacancies, which act as radiative centres in luminescence process (Jeong et al 2003;Morais et al 2006). Thin films of SnO 2 can be prepared by many techniques, such as chemical vapour deposition, sputtering, sol-gel spin coating, reactive evaporation, pulsed laser ablation, screen printing technique, spray pyrolysis, etc.…”