Recent Developments in β-Zn₄Sb₃ Based Thermoelectric Compounds

Figure 10

(a) Temperature dependence of the ratio of density of states effective mass to that of the free electron. (b) Variation of thermopower with carrier concentration for β-(Zn_1-xSm_x)₄Sb₃ (, 0.001, 0.002, and 0.003). Reproduced with permission from [23]. Copyright 2013, American Institute of Physics.

(a)

(b)