Patent ID: 8558108
Filing Date: 2013-10-15
Classification: C07D,C07F,C08G,H01L,Y02E

Abstract:
1. An electron donating organic material comprising a benzothiadiazole compound comprising (a) a benzothiadiazole skeleton and (b) an oligothiophene skeleton, and having a band gap (Eg) of 1.8 eV or less, and a level of highest occupied molecular orbital (HOMO) of −4.8 eV or less, wherein said benzothiadiazole compound is formed by covalently combining the benzothiadiazole skeleton and the oligothiophene skeleton alternately, a proportion between the benzothiadiazole skeleton and the oligothiophene skeleton is 1:1 to 1:2 however, excluding 1:1, and the number of thiophene rings contained in an oligothiophene skeleton is 3 or more and 12 or less.