The effect of Sr and Sb co-doping on structural, morphological and thermoelectric properties of BaSnO3 perovskite material

•Sr and Sb co-doped BaSnO3 perovskite materials were prepared by a novel method.•XRD patterns revealed the structure and single phase of the pure and co-doped samples.•Valance band maximum values increased for co-doped sample compared to pure sample.•Thermal conductivity reduced in the co-doped sample compared to pure sample.•The high thermoelectric power factor and figure of merit was achieved for SrSb5 sample.