Magnetotransport and thermoelectric properties of cobalt doped Bi2Te3 nanostructures

•Bi1-xCoxTe3 nanomaterials were prepared by microwave synthesis technique.•Quantum interference and electron–electron interaction dominated transport at low temperature.•Linear fit in Δσ(T) vs ln(T) curve results positive slope (k), and negative screening factor (F).•Phase coherence length (lφ) decreases with the increasing the cobalt incorporation.•Reduction of Seebeck coefficient (S) with increase in cobalt concentration.