“…A number of organic compounds have been studied for use in OFETs. They are classified into oligothiophenes and their analogues, ,− phenylene−thienylene oligomers, − oligoarylenevinylenes, − oligofluorenes, polycyclic aromatic compounds, ,,− macrocycles, ,− ,− fullerenes, − perylene dyes, − fused heterocyclic aromatic compounds, − …”