Electronic and thermoelectric properties of Mg2GexSn1−x (x = 0.25, 0.50, 0.75) solid solutions by first-principles calculations

Electronic and thermoelectric properties of Mg₂Ge_xSn_1−x (x = 0.25, 0.50, 0.75) solid solutions by first-principles calculations

Li Kai-yue, Lu Yong^†, Huang Yan, Shao Xiao-hong^‡

(color online) Transport coefficients map of Mg₂Ge_xSn_1−x as a function of carrier concentration n and temperature T for x = 0.25 (top), 0.50 (mid), 0.75 (bottom), respectively. Panels (a)–(c) show the Seebeck coefficient; panels (d)–(f) show the electronic conductivity; panels (g)–(i) show the power factor. The negative scale of x axis stands for the n-type, while the positive scale represents the p-type.