A new small molecule organic semiconductor, bisDMFABT-Th-MMN, containing a benzothiophene donor and methylene-malononitrile acceptor, exhibited high power conversion efficiency of 4.01% with a high open circuit voltage of 0.95 V in solution processed small molecule organic solar cells.
![Graphical abstract: Efficient small molecule organic semiconductor containing bis-dimethylfluorenyl amino benzo[b]thiophene for high open circuit voltage in high efficiency solution processed organic solar cell](http://hg.y866.cn/compound/lib/scimg/usr/1/C2RA01271E.jpg)
