title: Enhancement of efficiency in organic photovoltaic devices containing self-complementary hydrogen-bonding domains.
abstract: Self-complementary hydrogen-bonding domains were incorporated as the electron deficient unit in "push-pull", p-type small molecules for organic photovoltaic active layers. Such compounds were found to enhance the fill factor, compared with similar non-self-organized compounds reported in the literature, leading to higher device efficiencies. Evidence is presented that the ability of these molecules to form one-dimensional hydrogen-bonded chains and subsequently exhibit hierarchical self-assembly into nanostructured domains can be correlated with improved device efficiency.
authors.affiliation: School of Chemistry, Bio21 Institute, University of Melbourne, VIC 3010, Australia ; CSIRO Materials Science and Engineering, Private Bag 10, Clayton South, Victoria 3169, Australia.
authors.forename: Rohan J
authors.initials: RJ
authors.lastname: Kumar
authors.forename: Jegadesan
authors.initials: J
authors.lastname: Subbiah
authors.forename: Andrew B
authors.initials: AB
authors.lastname: Holmes
keywords: hydrogen-bonding; organic photovoltaics; self-assembly