Processing Additives for Improved Efficiency from Bulk Heterojunction Solar Cells Lee, Jae Kwan ; Ma, Wan Li ; Brabec, Christoph J. ; Yuen, Jonathan ; Moon, Ji Sun ; Kim, Jin Young ; Lee, Kwanghee ; Bazan, Guillermo C. ; Heeger, Alan J. Abstract Publication: Journal of the American Chemical Society Pub Date: March 2008 DOI: 10.1021/ja710079w Bibcode: 2008JAChS.130.3619L