title: Efficient near-infrared polymer nanocrystal light-emitting diodes.
abstract: Conjugated polymers and indium arsenide-based nanocrystals were used to create near-infrared plastic light-emitting diodes. Emission was tunable from 1 to 1.3 micrometers--a range that effectively covers the short-wavelength telecommunications band--by means of the quantum confinement effects in the nanocrystals. The external efficiency value (photons out divided by electrons in) is approximately 0.5% (that is, >1% internal) and is mainly limited by device architecture. The near-infrared emission did not overlap the charge-induced absorption bands of the polymer.
authors.affiliation: Electrical Engineering Department, Microelectronic Center, and Communications and Information Technologies Center, Technion-Israel Institute of Technology, Haifa 32000, Israel. nir@ee.technion.ac.il
authors.forename: Nir
authors.initials: N
authors.lastname: Tessler
authors.forename: Vlad
authors.initials: V
authors.lastname: Medvedev
authors.forename: Miri
authors.initials: M
authors.lastname: Kazes
authors.forename: ShiHai
authors.initials: S
authors.lastname: Kan
authors.forename: Uri
authors.initials: U
authors.lastname: Banin