Patent ID: 8022295

Claim:
A photoelectric conversion device of a pn junction type in a solar cell, comprising, in an arrangement adapted for use in the solar cell: a p-type organic semiconductor layer and an n-type organic semiconductor layer between two electrodes, at least one of said two electrodes being light transmitting, wherein said n-type organic semiconductor layer contains an n-type organic semiconducting compound composed of a first polyacene derivative represented by formula (I) below in which any one of A 1 , A 2 , A 3 , and A 4 contains an electron-withdrawing functional group, and wherein said p-type organic semiconductor layer contains a p-type organic semiconducting compound composed of a second polyacene derivative represented by formula (I) below, wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 5 are independent from each other, either the same or different, and each represents a hydrogen atom, a halogen atom, an optionally substituted hydrocarbon group having 1 to 40 carbon atoms, an optionally substituted alkoxy group having 1 to 40 carbon atoms, an optionally substituted aryloxy group having 6 to 40 carbon atoms, an optionally substituted amino group, a hydroxyl group, or an optionally substituted silyl group; wherein A 1 , A 2 , A 3 , and A 4 are independent from each other, either the same or different, and each represents an optionally substituted alkoxycarbonyl group having 2 to 40 carbon atoms, an optionally substituted aryloxycarbonyl group having 7 to 40 carbon atoms, a carbamoyl group (C(═O)NH 2 ), a haloformyl group (C(═O)X, wherein X represents a halogen atom), a formyl group (C(═O)H), an isocyano group, an isocyanato group, a thiocyanato group, or a thioisocyanato group; or for each of the pair A 1 and A 2 and the pair A 3 and A 4 , the groups may link to each other to form a ring represented by C(═O)BC(═O), wherein B is an oxygen atom or a group represented by N(B 1 ), B 1 being a hydrogen atom, a hydrocarbon group having 1 to 40 carbon atoms or a halogen atom; and wherein n is an integer of 1 or more.