In the present study, ZnO nanostructures imbedded SiO2 host matrix has been synthesized via sol gel route. Silica matrix acts as a good capping agent, embedding ZnO in silica matrix effectively inhibits their growth and aggregation. The structures thus formed were stable and persistent. PL emission of the sample nearly covers the full visible range attributed to deep level emissions promoted by ZnO nanostructures formed. This opens up a possibility of using the as synthesized material for visible LED applications.