Band engineering and tuning thermoelectric transport properties of p-type Bi0.52Sb1.48Te3 by Pb doping for low-temperature power generation

The maximum power factor (~ 4.4 mW m− 1 K− 2) at 300 K was obtained using 0.31 at.% Pb-doped Bi0.52Sb1.48Te3 and was found to originate from an enlarged density of states (DOS) effective mass as a result of the band engineering effect.258