Improving bulk heterojunction solar cells through controlling their nanostructure - Cates,NC; Burkhard,GF; Gysel,R; Beiley,Z; Hoke,ET; Scully,SR; Miller,CE; Toney,MF; Heeney,M; McCulloch,I; McGehee,MD (ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2010)