Search results for "Charge Carriers"

showing 4 items of 4 documents

Electronic functionality of Gd-bisphthalocyanine: Charge carrier concentration, charge mobility, and influence of local magnetic field

2018

Abstract Gadolinium bisphthalocyanine (GdPc2) has been placed among the highest ranked molecular materials considered namely for modern optoelectronic applications including organic solar cells. To improve understanding of the correlation between GdPc2 magnetic properties and its electronic functionality, we experimentally and theoretically studied charge carrier concentration, charge mobility, and influence of local magnetic field on charge carrier transport. For better clearance, all the main studied properties of GdPc2 bisphthalocyanine were compared with Zn phthalocyanine (ZnPc) as a reference material. Conductivity and charge carrier mobility were measured in materials incorporated in …

Materials scienceOrganic solar cellInfrared spectroscopy02 engineering and technology010402 general chemistry01 natural sciencesUltraviolet visible spectroscopyMaterials Chemistrygadolinium bisphthalocyanine electronic functionalityinteraction of the mobile charge carriers with the local magnetic field of GdPc2influence of local magnetic field on charge carrier transportMechanical EngineeringIntermolecular forceMetals and AlloysCharge (physics)021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesElectronic Optical and Magnetic MaterialsMagnetic fieldMechanics of MaterialsChemical physicscharge mobilityCharge carrierIonization energy0210 nano-technologySynthetic Metals
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Photoconductivity and photovoltaic effect in indium selenide

1983

Transport and phototransport properties of crystalline indium monoselenide (InSe) doped with a variety of elements are reported. Measured mobilities, lifetimes, and effective diffusion lengths of photoexcited carriers are used to interpret electrical and photovoltaic properties of several different structures. These include p‐n junctions, bismuth/p‐type InSe, platinum/n‐type InSe, and indium tin oxyde (ITO)/p‐type InSe. External solar efficiencies of the best devices are between 5% and 6%. The influence on the efficiency of the various parameters is evaluated, and ways of improvement are discussed.

Materials sciencePhotoconductivityInorganic chemistryN−Type ConductorsGeneral Physics and Astronomychemistry.chemical_elementPhotovoltaic effectIndium CompoundsEfficiencyCrystalsBismuthPhotovoltaic EffectCharge Carrierschemistry.chemical_compoundP−Type ConductorsIndium Selenides ; Photoconductivity ; Photovoltaic Effect ; Experimental Data ; Crystals ; Doped Materials ; Mobility ; Lifetime ; Diffusion Length ; Charge Carriers ; Electrical Properties ; P−N Junctions ; P−Type Conductors ; N−Type Conductors ; Bismuth ; Platinum ; Indium Compounds ; Tin Oxides ; Efficiency:FÍSICA [UNESCO]SelenideDoped MaterialsPlatinumMobilityIndium Selenidesbusiness.industryPhotoconductivityElectrical PropertiesDopingP−N JunctionsUNESCO::FÍSICATin OxidesDiffusion LengthchemistryOptoelectronicsExperimental DataCharge carrierTinbusinessBismuthIndiumLifetime
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Relaxation of photogenerated carriers in P3HT:PCBM organic blends.

2009

Relaxing in the sunlight. Long time-transient decays of photogenerated carriers in P3HT:PCBM blends for organic solar cells are interpreted in terms of the relaxation of hole carriers in a broad density of states. The after-pulse time-resolved microwave conductivity (TRMC) decays observed in P3HT:PCBM blends display a dependence on time close to t−β, independent of excitation intensity, in the 10 ns–1 μs range. This is explained in terms of the relaxation of carriers in a Gaussian density of states (DOS). The model is based on a demarcation level that moves with time by thermal release and retrapping of initially trapped carriers. The model shows that when the disorder is large the after-pu…

Materials scienceTime FactorsGeneral Chemical EngineeringThiophenesMolecular physicschemistry.chemical_compoundNuclear magnetic resonanceThermalSolar EnergyEnvironmental ChemistryGeneral Materials ScienceMicrowavesRange (particle radiation)photochemistryRelaxation (NMR)General EnergychemistryChlorobenzenesolar cellstransportCharge carrierPolymer blendFullerenesDispersion (chemistry)Excitationpolymer blendscharge carriersChemSusChem
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Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO 3 Nanocuboids

2019

S.R. and S.S. contributed equally to this work. This work was mainly supported by the Natural Science Foundation of China (Grant No. 11874076), National Science Associated Funding (NSAF, Grant No. U1530402), and Science Challenging Program (Grant No. TZ2016001). D.E. thanks the financial support from Spanish MINECO under Grant No. MAT2016-75586-C4-1-P and from Generalitat Valenciana under Grant Prometeo/2018/123, EFIMAT. The X-ray diffraction measurements were performed at the BL15U1 station, Shanghai Synchrotron Radiation Facility (SSRF) in China. The HP XAS measurements were performed at 20 ID-C, APS, ANL. APS is supported by DOE-BES, under contract no. DE-AC02-06CH11357. The authors grat…

decompressionPhase transitionMaterials scienceBand gapGeneral Chemical Engineeringinverse photoconductivityGeneral Physics and AstronomyMedicine (miscellaneous)02 engineering and technology010402 general chemistryPolaron01 natural sciencesBiochemistry Genetics and Molecular Biology (miscellaneous)Electrical resistivity and conductivityNano-:NATURAL SCIENCES:Physics [Research Subject Categories]General Materials Sciencelcsh:Sciencepolaronsnano‐heterojunctionsbusiness.industryPhotoconductivityGeneral EngineeringHeterojunctionnano-heterojunctions021001 nanoscience & nanotechnologycompression0104 chemical sciencesphase transitionOptoelectronicslcsh:QCharge carrier0210 nano-technologybusinesscharge carriersAdvanced Science
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