3:45 PM - 4:00 PM
[15p-1F-9] PTB7-Th:C70 bulk heterojunction photocells prepared with halogen-free solvent
Keywords:Organic thin-film photocell,conjugated polymer,Unmodified fullerene
Photocells with a recently-developed conjugated polymer PTB7-Th and umodefied fullerene prepared with 1,2,4-trimethylbenzene have been studied. The power conversion efficiency (PCE) of the best device was found to be 5%, which is a record PCE for the solution-processed photocells using unmodefied fullerene.