p-type thermoelectric material, manufacturing method of the thermoelectric elements and the p-type thermoelectric material

p-type thermoelectric material according to one embodiment of the present invention, magnesium (Mg), silicon (Si), tin (Sn), Mg sites, Si site of the compound consisting of germanium (Ge), the Sn sites and / or Ge site at least any one of the, the alkali metal, 1B group group 1A gold (Au), silver (Ag), copper (Cu), zinc (Zn), calcium (Ca), of the group consisting of gallium (Ga) It is substituted with one or more of the elements.