Patent ID: 7972541

Claim:
Doped organic semiconductor material comprising at least one organic matrix material, which is doped with at least one dopant, the matrix material being selected from the group consisting of phenanthroline derivatives of the following structure I: wherein: R3 and R6 are aryl; R1 and R8 are independently selected from the group consisting of H, C 1 -C 20 alkyl, C 1 -C 20 alkenyl, C 1 -C 20 alkynyl, alkyloxy —OR x , dialkylamino —NR x R y , alkylthio —SR x , —NO 2 , —CHO, —COOR x , —F, —Cl, —Br, —I, —CN, —NC, —SCN, —OCN, —SOR x , —SO 2 R x , aryl, heteroaryl, oligoaryl, oligoheteroaryl, and oligoarylheteroaryl, wherein R x and R y are independently selected from the group consisting of C 1 -C 20 alkyl, C 1 -C 20 alkenyl, and C 1 -C 20 alkynyl; wherein all the sp 2 -hybridized carbon atoms that are not used for ring bonding may be substituted independently of one another with H, C 1 -C 20 alkyl, C 1 -C 20 alkenyl, C 1 -C 20 alkynyl, alkyloxy —OR x , dialkylamino —NR x R y , alkylthio —SR x , —NO 2 , —CHO, —COOR x , —F, —Cl, —Br, —I, —CN, —NC, —SCN, —OCN, —SOR x , or —SO 2 R x , wherein R x and R y are independently selected from C 1 -C 20 alkyl, C 1 -C 20 alkenyl, or C 1 -C 20 alkynyl; and wherein at least one of R1 and R8 is aryl; and wherein R2, R4, R5, and R7 are hydrogen; wherein the dopant is a metal complex.