Substrate dependent structural and electrical properties of Bi2Cu0.1V0.9O5.35 solid electrolyte thin films

High ion conducting room temperature stabilized γ-Bi2Cu0.1V0.9O5.35 has been successfully synthesized in thin film form on glass and alumina substrates. The films were characterized for their structural properties like XRD, SEM, EDAX and AFM. Bi2Cu0.1V0.9O5.35 films deposited on alumina substrate showed single-phase nature with tetragonal crystal structure. The AFM study reveals the considerable change in growth morphology on alumina substrate. The temperature dependent ionic conductivity of Bi2Cu0.1V0.9O5.35 films synthesized on glass and alumina substrates were studied using impedance spectroscopy. The high ionic conductivity has been observed at lower temperature for Bi2Cu0.1V0.9O5.35 thin films synthesized on alumina substrates. With these comparisons, alumina substrate proves its candidature for deposition of Bi2Cu0.1V0.9O5.35 films for solid oxide fuel cell applications.