title: Inverted colloidal quantum dot solar cells.
abstract: An inverted architecture of quantum dot solar cells is demonstrated by introducing a novel ZnO method on top of the PbS CQD film. Improvements in device characteristics stem from constructive optical interference from the ZnO layer that enhances absorption in the PbS CQD layer. Outstanding diode characteristics arising from a superior PbS/ZnO junction provide a further electronic advantage.
authors.affiliation: Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea.
authors.forename: Gi-Hwan
authors.initials: GH
authors.lastname: Kim
authors.forename: Bright
authors.initials: B
authors.lastname: Walker
authors.forename: Hak-Beom
authors.initials: HB
authors.lastname: Kim
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Edward H
authors.initials: EH
authors.lastname: Sargent
authors.forename: Jongnam
authors.initials: J
authors.lastname: Park
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Kim
keywords: depleted heterojunction; lead sulfide; nanoparticles; quantum dot solar cells; zinc oxide