Patent ID: 8471019

Claim:
A semiconductor device selected from the group consisting of a diode, an organic field effect transistor, a solar cell, or a device containing a diode, and/or organic field effect transistor and/or solar cell comprising a non-polymeric compound as an organic semiconductor, wherein said compound is a quinoid diheteroacene of the formula I wherein X is O, S or NR, each of R, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 independently are an organic residue, or 2 or more thereof together form one or more annealed rings which may be substituted or unsubstituted, carbocyclic or heterocyclic, aromatic, quinoid or aliphatic; and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 further may be hydrogen with proviso that formula (1) excludes a boron complex.