abstract |
The present invention discloses a novel compound semiconductor which can be used for a thermoelectric material or the like and its application. The compound semiconductor according to the present invention can be represented by the following chemical formula (1). ≪ Formula 1 > Bi 2 Te x Se ax In y M z M is at least one selected from the group consisting of Cu, Fe, Co, Ag and Ni, and 2.5 <x <3.0, 3.0? A <3.5, 0 <y and 0? |