title: Molecular ionic junction for enhanced electronic charge transfer.
abstract: We present the first evidence of charge injection improvement in an organic electroluminescent device provided by a single ionic molecular layer. A hole-dominated, hybrid organic-inorganic light-emitting device is used as a probe to verify the effectiveness of the ionic compound monolayer on modifying the metal oxide cathode. The rearrangement of ions under an applied bias induces a strong field at the electrode-organic interface resulting in an enhancement of the electron injection into the organic semiconductor. A strong decrease in turn-on voltage for electroluminescence is observed for the device containing the ionic molecular monolayer.
authors.affiliation: Instituto de Ciencia Molecular, and Fundació General de la UniVersidad de Valencia (FGUV),UniVersidad de Valencia, P.O. Box 22085, E-46071 Valencia, Spain. henk.bolink@uv.es
authors.forename: Henk J
authors.initials: HJ
authors.lastname: Bolink
authors.forename: Etienne
authors.initials: E
authors.lastname: Baranoff
authors.forename: Miguel
authors.initials: M
authors.lastname: Clemente-León
authors.forename: Eugenio
authors.initials: E
authors.lastname: Coronado
authors.forename: Angel
authors.initials: A
authors.lastname: Lopéz-Muñoz
authors.forename: Diego
authors.initials: D
authors.lastname: Repetto
authors.forename: Michele
authors.initials: M
authors.lastname: Sessolo
authors.forename: Md K
authors.initials: MK
authors.lastname: Nazeeruddin