Strategies for optimizing the thermoelectricity of PbTe alloys
Zhai Jinze †, Wang Teng †, Wang Hongchao ‡, Su Wenbin, Wang Xue, Chen Tingting, Wang Chunlei §
       

(color online) (a) Schematic diagram of the density of states of the un-doped valance band in PbTe (dashed line) contrasted to that of resonant doping. E D is the resonance level and Γ the resonance width.[19] (b) The Seebeck coefficient versus carrier concentration (dots) and the Pisarenko curve.[21,37,38] (c) The temperature dependence figure of merit for Tl-doped PbTe.[38]