title: Small-molecule photovoltaics based on functionalized squaraine donor blends.
abstract: Two squaraine (SQ) donor molecules with different absorption bands are blended together for better coverage of the solar spectrum. The blend SQ device shows a significant improvement compared with single SQ donor devices. By applying a solvent annealing process and a compound buffer layer, a power-conversion efficiency of 5.9 ± 0.3% is achieved under 1 sun illumination.
authors.affiliation: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109, USA.
authors.forename: Xin
authors.initials: X
authors.lastname: Xiao
authors.forename: Guodan
authors.initials: G
authors.lastname: Wei
authors.forename: Siyi
authors.initials: S
authors.lastname: Wang
authors.forename: Jeramy D
authors.initials: JD
authors.lastname: Zimmerman
authors.forename: Christopher K
authors.initials: CK
authors.lastname: Renshaw
authors.forename: Mark E
authors.initials: ME
authors.lastname: Thompson
authors.forename: Stephen R
authors.initials: SR
authors.lastname: Forrest
mesh_terms: D003503:Cyclobutanes / Q000737:chemistry*; D004553:Electric Conductivity; D011211:Electric Power Supplies; D010636:Phenols / Q000737:chemistry*; D013472:Sunlight
chemical_list: D003503:Cyclobutanes; D010636:Phenols; C480596:squaraine