Organic semiconductor material and organic optoelectronic device using the same

An organic semiconductor material comprising a structure of Formula I:

• wherein A is a monocyclic ring or polycyclic ring, and the polycyclic ring comprises at least two six-membered rings;
• B and C are polycyclic rings, each comprising at least one six-membered ring;
• D, E, F, and G are monocyclic rings or polycyclic rings, each comprising at least one five-membered ring;
• and
• R1 and R2 are independently selected from the following groups and any combinations thereof:
• C1-C30 alkyl, C1-C30 silyl, C1-C30 alkoxy, C1-C30 alkylthio, C1-C30 haloalkyl, C2-C30 ester, C1-C30 alkylaryl, C1-C30 alkyl heteroaryl, C1-C30 silyl aryl, C1-C30 silyl heteroaryl, C1-C30 alkoxyaryl, C1-C30 alkoxy heteroaryl, C1-C30 alkylthioaryl, C1-C30 alkylthio heteroaryl, C1-C30 haloalkyl aryl, C1-C30 haloalkyl heteroaryl, C2-C30 esteryl aryl, and C2-C30 esteryl heteroaryl.