Patent ID: 8728357

Claim:
A compound semiconductor, represented by Chemical Formula 1 below: In x M y Co 4-m-a A m Sb 12-n-z-b X n Q′ z Chemical Formula 1 where, in the Chemical Formula 1, M is either Zn or Zn and at least one selected from the group consisting of Ca, Sr, Ba, Ti, V, Cr, Mn, Cu, Ag, Cd, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; A is at least one selected from the group consisting of Fe, Ni, Ru, Rh, Pd, Ir and Pt; X is at least one selected from the group consisting of Si, Ga, Ge and Sn; Q′ is at least one selected from the group consisting of O, S and Se; 0<x<1; 0<y<1; 0≦m≦1; 0≦n<9; 0<z≦2; 0≦a≦1, 0<b≦3 and 0<n+z+b<12.