Patent ID: 8772622

Claim:
A p- or n-conductive semiconductor material comprising a compound of formula (I) Sn a Pb 1-a-(x1+ . . . +xn) A 1 x1 . . . A n xn (Te 1-p-q-r Se p S q X r ) 1+z (I), wherein 0.2≦a≦0.75; n is ≧2, where n is a number of chemical elements different than Sn and Pb; in each case independently 0.001≦x1, x2, . . . xn≦0.05; A 1 , A 2 , . . . A n are different from one another, A 1 is selected from the group consisting of Ti, Zr, Hf, Mn, Ag, and Ge, and A 2 , . . . A n are selected from the group consisting of Ti, Zr, and Hf; X is F, Cl, Br, or I; 0≦p≦1; 0≦q≦1; 0≦r≦0.01; and −0.01≦z≦0.01, with the condition that a+x1+x2 . . . +xn<1 and the sum of x1 . . . xn is in the range of 0.002 to 0.1; and wherein p-type condition does not switch to n-type condition with rising temperature.