title: PbSe nanocrystal-based infrared-to-visible up-conversion device.
abstract: Low-cost hybrid up-conversion devices with infrared sensitivity to 1.5 μm were obtained by integrating a colloidal PbSe nanocrystal near-infrared sensitizing layer on a green phosphorescent organic light emitting diode. A ZnO nanocrystal hole blocking layer is incorporated in the devices for keeping the device off in the absence of IR excitation. The maximum photon (1.3 μm)-to-photon (0.52 μm) conversion efficiency is 1.3%. The extension (until 1.5 μm) of the near-infrared wavelengths, which can be converted to visible light, may be able to improve night vision.
authors.affiliation: Department of Materials Science and Engineering, University of Florida , Gainesville, Florida 32611-6400, United States.
authors.forename: Do Young
authors.initials: DY
authors.lastname: Kim
authors.forename: Kaushik Roy
authors.initials: KR
authors.lastname: Choudhury
authors.forename: Jae Woong
authors.initials: JW
authors.lastname: Lee
authors.forename: Dong Woo
authors.initials: DW
authors.lastname: Song
authors.forename: Galileo
authors.initials: G
authors.lastname: Sarasqueta
authors.forename: Franky
authors.initials: F
authors.lastname: So