title: All inorganic iron pyrite nano-heterojunction solar cells.
abstract: The large absorption coefficient of iron pyrite (FeS(2)) nanocrystals coupled with their low-cost and vast-abundance shows great promise as a potential photovoltaic absorber. Here, we demonstrate that bulk heterojunction (BHJ) nanostructures consisting of 80 nm FeS(2) nanocubes (NCs) and 4 nm CdS quantum dot (QD) matrix, lead to a well-defined percolation network, which significantly improved open-circuit voltage (V(oc)) to 0.79 V and power conversion efficiency of 1.1% under AM 1.5 solar illumination. The localized surface plasmon resonances (LSPRs) arising from p-type colloidal FeS(2) NCs exhibit plasmonic photoelectron conversion. Our approach can be applied to a wide range of colloidal nanocrystals exhibiting the LSPRs effect and is compatible with solution processing, thereby offering a general tactic to enhancing the efficiency of all inorganic BHJ solar cells and LSPRs-based NIR photodetectors.
authors.affiliation: Department of Chemistry, University of Kansas, Lawrence, KS 66045, USA.
authors.forename: Alec
authors.initials: A
authors.lastname: Kirkeminde
authors.forename: Randall
authors.initials: R
authors.lastname: Scott
authors.forename: Shenqiang
authors.initials: S
authors.lastname: Ren
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D045663:Quantum Dots; D012993:Solar Energy; D013440:Sulfides / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D013440:Sulfides; C034939:cadmium sulfide; C011342:pyrite; D007501:Iron