We fabricated organic-inorganic hybrid films by a sol-gel method using Tetraethoxysilane (TEOS). It is found that water-soluble organic emissive materials should be used, because water must be added to TEOS for a sol-gel reaction. The acid catalyst is better than the base catalyst when TEOS is used. The organic-inorganic hybrid films reveal a fine antioxidant effect, because most of the organic emissive materials are surrounded by SiO2. This means that hybrid films have fine resistance to moisture and an antioxidant effect. Consequently, they lead to a strong sealing effect, resulting in the long operation lifetime of photoluminescence (PL) emissions.