Search results for "Microelectrònica"

showing 3 items of 3 documents

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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Quasi‐digital front‐ends for current measurement in integrated circuits with giant magnetoresistance technology

2014

In this study, the authors report on two different electronic interfaces for low-power integrated circuits electric current monitoring through current-to-frequency (I-f) conversion schemes. This proposal displays the intrinsic advantages of the quasi-digital systems regarding direct interfacing and self-calibrating capabilities. In addition, as current-sensing devices, they have made use of the giant magnetoresistance (GMR) technology because of its high sensitivity and compatibility with standard complementary metal oxide semiconductor processes. Single elements and Wheatstone bridges based on spin-valves and magnetic tunnel junctions have been considered. In this sense, schematic-level si…

ModulationResistive sensorsEngineeringWheatstone bridgebusiness.industryElectrical engineeringControl and Systems Engineering; Electrical and Electronic EngineeringIntegrated circuitsGiant magnetoresistance:Enginyeria electrònica::Microelectrònica::Circuits integrats [Àrees temàtiques de la UPC]Integrated circuitInterfacelaw.inventionPrinted circuit boardCMOSControl and Systems EngineeringlawInterfacingLow-power electronicsLow-powerCircuits integratsElectrical and Electronic EngineeringElectric currentbusinessIET Circuits, Devices & Systems
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Integration of GMR sensors with different technologies

2016

Less than thirty years after the giant magnetoresistance (GMR) effect was described, GMR sensors are the preferred choice in many applications demanding the measurement of low magnetic fields in small volumes. This rapid deployment from theoretical basis to market and state-of-the-art applications can be explained by the combination of excellent inherent properties with the feasibility of fabrication, allowing the real integration with many other standard technologies. In this paper, we present a review focusing on how this capability of integration has allowed the improvement of the inherent capabilities and, therefore, the range of application of GMR sensors. After briefly describing the …

SystemEngineeringTechnologyPerformanceIntegrationThermal agitationintegration02 engineering and technologyMicroarraylcsh:Chemical technology01 natural sciencesBiochemistryAnalytical ChemistryGMR; integration; technology:Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors [Àrees temàtiques de la UPC]MicroelectronicsAtomic and Molecular Physicslcsh:TP1-1185Instrumentation010302 applied physicsElectrical engineeringGMRDetectors021001 nanoscience & nanotechnologyFunctional systemAtomic and Molecular Physics and Optics:Enginyeria electrònica::Microelectrònica [Àrees temàtiques de la UPC]CMOStechnology0210 nano-technologyCmosGiant magnetoresistanceMicroelectrònicaNoise (electronics)ArticleFabricationLow temperature deposition0103 physical sciencesElectronic engineeringElectronicsSensitivity (control systems)Electrical and Electronic Engineeringbusiness.industryGiant magnetoresistance sensorsMultilayersNanoparticlesand OpticsElectronicsbusinessGMR; Integration; Technology; Analytical Chemistry; Atomic and Molecular Physics and Optics; Biochemistry; Electrical and Electronic Engineering
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