title: Graded donor-acceptor heterojunctions for efficient organic photovoltaic cells.
authors.affiliation: Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors.forename: Richa
authors.initials: R
authors.lastname: Pandey
authors.forename: Russell J
authors.initials: RJ
authors.lastname: Holmes
mesh_terms: D000042:Absorption; D004553:Electric Conductivity; D011211:Electric Power Supplies; D009930:Organic Chemicals / Q000737:chemistry*; D017785:Photons; D013472:Sunlight
chemical_list: D009930:Organic Chemicals