| Abstract Scope |
Thermoelectric materials convert temperature gradients directly into electrical energy, making them promising candidates for waste heat recovery and sustainable energy conversion. SrTiO3-based perovskite oxides are attractive because of their thermal stability, chemical robustness, and potential operation in air at elevated temperatures. However, improving thermoelectric performance requires balancing electrical conductivity, Seebeck coefficient, and thermal conductivity. In this study, a systematic series of Ru- and La-substitutedSrTiO3-based perovskites was synthesized to investigate how compositional modification affects thermoelectric transport behavior. Electrical conductivity, Seebeck coefficient, and thermal conductivity were measured across the composition series, the resulting power factor and thermoelectric figure of merit were evaluated. The results establish composition-dependent transport trends and show how Ru and La substitution influence charge transport, heat conduction, and overall thermoelectric response. Together with the companion structural characterization study, this work supports rational design of SrTiO3-based perovskites for efficient waste heat recovery applications and sustainable energy conversion technologies. |