Substrate dependent structural and electrical properties of Bi_2Cu_(0.1)V_(0.9)O_(5.35) solid electrolyte thin films

摘要

High ion conducting room temperature stabilized gamma-Bi_2Cu_(0.1)V_(0.9)O_(5.35) 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. Bi_2Cu_(0.1)V_(0.9)O_(5.35) 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 Bi_2Cu_(0.1)V_(0.9)O_(5.35) films synthesized on glass and alumina substrates were studied using impedance spectroscopy. The high ionic conductivity has been observed at lower temperature for Bi_2Cu_(0.1)V_(0.9)O_(5.35) thin films synthesized on alumina substrates. With these comparisons, alumina substrate proves its candidature for deposition of Bi_2Cu_(0.1)V_(0.9)O_(5.35) films for solid oxide fuel cell applications.