title: Comparison of the photovoltaic response of oleylamine and inorganic ligand-capped CuInSe2 nanocrystals.
abstract: Thin film photovoltaic devices (PVs) were fabricated with CuInSe(2) (CIS) nanocrystals capped with either oleylamine, inorganic metal chalcogenide-hydrazinium complexes (MCC), or S(2-), HS(-), and OH(-). A CIS nanocrystal layer deposited from solvent-based inks without high temperature processing served as the active light-absorbing material in the devices. The MCC ligand-capped CIS nanocrystal PVs exhibited power conversion efficiency under AM1.5 illumination (1.7%) comparable to the oleylamine-capped CIS nanocrystals (1.6%), but with significantly thinner absorber layers. S(2-)-capped CIS nanocrystals could be deposited from aqueous dispersions, but exhibited lower photovoltaic performance.
authors.affiliation: Department of Chemical Engineering, Texas Materials Institute, and Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, USA.
authors.forename: C Jackson
authors.initials: CJ
authors.lastname: Stolle
authors.forename: Matthew G
authors.initials: MG
authors.lastname: Panthani
authors.forename: Taylor B
authors.initials: TB
authors.lastname: Harvey
authors.forename: Vahid A
authors.initials: VA
authors.lastname: Akhavan
authors.forename: Brian A
authors.initials: BA
authors.lastname: Korgel