title: Enhanced efficiency of single and tandem organic solar cells incorporating a diketopyrrolopyrrole-based low-bandgap polymer by utilizing combined ZnO/polyelectrolyte electron-transport layers.
abstract: Power conversion efficiency up to 8.6% is achieved for a solution-processed tandem solar cell based on a diketopyrrolopyrrole-containing polymer as the low-bandgap material after using a thin polyelectrolyte layer to modify the electron-transport ZnO layers, indicating that interfacial engineering is a useful approach to further enhancing the efficiency of tandem organic solar cells.
authors.affiliation: Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, USA.
authors.forename: Jang
authors.initials: J
authors.lastname: Jo
authors.forename: Jean-Rémi
authors.initials: JR
authors.lastname: Pouliot
authors.forename: David
authors.initials: D
authors.lastname: Wynands
authors.forename: Samuel D
authors.initials: SD
authors.lastname: Collins
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Thanh Luan
authors.initials: TL
authors.lastname: Nguyen
authors.forename: Han Young
authors.initials: HY
authors.lastname: Woo
authors.forename: Yanming
authors.initials: Y
authors.lastname: Sun
authors.forename: Mario
authors.initials: M
authors.lastname: Leclerc
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Heeger
mesh_terms: D004573:Electrolytes / Q000737:chemistry*; D004579:Electron Transport; D004583:Electrons; D053768:Metal Nanoparticles / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry*; D012993:Solar Energy; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D004573:Electrolytes; D011108:Polymers; D011758:Pyrroles; D015034:Zinc Oxide
keywords: conjugated polymer; polyelectrolyte; solvent additives; tandem organic solar cells; zinc oxide