Defects Engineering with Multiple Dimensions in Thermoelectric Materials
(a) Schematic diagram showing characteristics of carrier concentration dependence of thermoelectric-related parameters. (b) Carrier concentration at room temperature (shown in brackets) and temperature-dependent electrical conductivity of . The increased carrier concentration benefited from doping atoms leads to a significant enhancement in electrical conductivity . Reproduced with permission from the American Ceramic Society. (c) Room temperature carrier concentration as a function of alloying concentration in the series. The yellow region represents BiTe is the dominating defects while the blue region representing VTe or VSe is the dominating defects. Data are from [56, 58, 62]. (d) Temperature dependence value of polycrystalline series prepared via hot deformation . Reproduced with permission from WILEY-VCH.