0000000000148039

AUTHOR

Cristobal Voz

showing 2 related works from this author

Increased conductivity of a hole transport layer due to oxidation by a molecular nanomagnet

2008

Thin film transistors based on polyarylamine poly?N,N?-diphenyl-N,N ?bis?4-hexylphenyl?- ?1,1?biphenyl?-4,4?-diamine ?pTPD? were fabricated using spin coating in order to measure the mobility of pTPD upon oxidation. Partially oxidized pTPD with a molecular magnetic cluster showed an increase in mobility of over two orders of magnitude. A transition in the mobility of pTPD upon doping could also be observed by the presence of a maximum obtained for a given oxidant ratio and subsequent decrease for a higher ratio. Such result agrees well with a previously reported model based on the combined effect of dipolar broadening of the density of states and transport manifold filling. Peer Reviewed

Electron mobilityMaterials scienceOrganic compounds.Analytical chemistryDipolar broadeningGeneral Physics and AstronomySpin coatingHole mobilityElectronic density of statesConductivityOxidacióCompostos orgànicsElectrical resistivity and conductivity:FÍSICA [UNESCO]Molecular clustersOrganic compoundsOxidationDopingElectrical conductivityOxidation.Molecular nanomagnetMolecular magnetic clusterMolecular magnetism Nanostructured materialsSpin coatingDopingUNESCO::FÍSICAElectric conductivity.Thin film transistorsNanostructured materialsConductivitat elèctricaNanomagnet:Enginyeria electrònica::Microelectrònica [Àrees temàtiques de la UPC]Doping ; Electrical conductivity ; Electronic density of states ; Hole mobility ; Molecular clusters ; Molecular magnetism Nanostructured materials ; Organic compounds ; Oxidation ; Spin coating ; Thin film transistorsDensity of statesNanostructured materials.Hole transport layerMaterials nanoestructuratsOrder of magnitude
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Improving the efficiency of light-emitting diode based on a thiophene polymer containing a cyano group

2007

Abstract We report on the overall improvement of a single layer organic light-emitting diode device based on poly{[3-hethylthiophene]-co-3-[2-( p -cyano-phenoxy)ethyl]thiophene} or namely PTOPhCN. This polymer was recently developed by adding a cyano group as a side-chain substituent of the thiophenic backbone onto the main polymer chain and showed promising results for light-emitting diode devices. Using an improved device layout, bright red electroluminescence was obtained at 4 V and showed a luminance of about 400 cd/m 2 at 8 V with current densities in the order of 6000 A/m 2 .

POLY{[3-HETHYLTHIOPHENE]-CO-3-[2-(P-CYANO-PHENOXY)ETHYL]THIOPHENE}Materials sciencePolymersCyano groupSubstituent:Enginyeria dels materials::Materials plàstics i polímers [Àrees temàtiques de la UPC]ElectroluminescenceOrganic light-emitting diodeslaw.inventionBiomaterialschemistry.chemical_compoundlawThiopheneMaterials ChemistryOLEDSide chainThiopheneELECTROLUMINESCENCEElectrical and Electronic EngineeringPolymerDiodechemistry.chemical_classificationbusiness.industryGeneral ChemistryPolymerLuminance efficiencyCondensed Matter PhysicsOrganic light-emitting diodes; Polymer; Thiophene; Cyano group; Luminance efficiencyElectronic Optical and Magnetic MaterialsPolímersOLEDchemistryOptoelectronicsPhysical chemistryOrganic light-emitting diodebusinessLight-emitting diode
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