Xiaodong Huang, Jun Peng, Kunyuan Lu
May 29, 2014
Citations
0
Influential Citations
5
Citations
Journal
Applied Physics Letters
Abstract
Bromobenzene and iodobenzene with/without additive 1,8-diiodooctane were investigated as the alternative solvents for the widely used chlorobenzene/1,8-diiodooctane in polymer/fullerene solar cells. The P3HT/[6,6]-phenylC61-butyric acid methyl ester devices using bromobenzene/1,8-diiodooctane co-solvent have achieved significantly better performance than those using conventional chlorobenzene/1,8-diiodooctane, which is attributed to the enhanced diode characteristics, higher charge-carrier mobility, and the improved morphology. More importantly, the bromobenzene/1,8-diiodooctane system has also demonstrated improved performance for other polymer/fullerene composites. Thus, we conclude that, with appropriate boiling point, intriguing solubility for active materials, and good compatibility with 1,8-diiodooctane, bromobenzene can be an excellent alternative solvent used for some polymer/fullerene systems in polymer/fullerene solar cells.