Search results for "Indium oxide"

showing 4 items of 4 documents

Synthesis and High-Pressure Study of Corundum-Type In2O3

2015

This work reports the high-pressure and high-temperature (HP-HT) synthesis of pure rhombohedral (corundum-type) phase of indium oxide (In2O3) from its most stable polymorph, cubic bixbyite-type In2O3, using a multianvil press. Structural and vibrational properties of corundum-type In2O3 (rh-In2O3) have been characterized by means of angle-dispersive powder X-ray diffraction and Raman scattering measurements at high pressures which have been compared to structural and lattice dynamics ab initio calculations. The equation of state and the pressure dependence of the Raman-active modes of the corundum-type phase are reported and compared to those of corundum (α-Al2O3). It can be concluded that …

High-pressureCorundumchemistry.chemical_elementCorundumengineering.materialIndium oxidesymbols.namesakeAb initio quantum chemistry methodsPhase (matter)Physical and Theoretical ChemistryHP-HT synthesisBulk modulusChemistrySurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsX-ray diffractionCrystallographyGeneral EnergyFISICA APLICADAX-ray crystallographyRaman spectroscopyengineeringsymbolsOrthorhombic crystal systemAb initio calculationsRaman spectroscopyIndium
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Structural and Vibrational Properties of Corundum-type In2O3 Nanocrystals under Compression

2017

[EN] This work reports the structural and vibrational properties of nanocrystals of corundum-type In2O3 (rh-In2O3) at high pressures by using angle-dispersive x-ray diffraction and Raman scattering measurements up to 30 GPa. The equation of state and the pressure dependence of the Raman-active modes of the corundum phase in nanocrystals are in good agreement with previous studies on bulk material and theoretical simulations on bulk rh-In2O3. Nanocrystalline rh-In2O3 showed stability under compression at least up to 20 GPa, unlike bulk rh-In2O3 which gradually transforms to the orthorhombic Pbca (Rh2O3-III-type) structure above 12 14 GPa. The different stability range found in nanocrystallin…

Materials scienceCorundum nanocrystalsThermodynamicsBioengineeringCorundumNanotechnology02 engineering and technologyengineering.material010402 general chemistryEspectroscopia01 natural sciencesIndium oxidesymbols.namesakePhase (matter)NanocristalesGeneral Materials ScienceElectrical and Electronic EngineeringhighpressureMechanical EngineeringDifracción de rayos XGeneral Chemistry021001 nanoscience & nanotechnologyNanocrystalline material0104 chemical sciencesX-ray diffractionNanocrystalMechanics of MaterialsFISICA APLICADAX-ray crystallographyRaman spectroscopysymbolsengineeringOrthorhombic crystal systemAb initio calculations0210 nano-technologyRaman spectroscopyRaman scatteringAlta presión
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Synthesis and characterization of indium oxide at high pressures

2018

Introducción: La naturaleza es sorprendente pero a la vez limitada. A mi entender, nada tiene más potencial que aplicar el ingenio humano para modificar lo que nos rodea y crear algo completamente nuevo. La Física de la Materia Condensada es un campo que actualmente está ganando importancia en la Física moderna. En virtud de los éxitos logrados en Física de la Materia Condensada se han producido enormes avances en el campo de la electrónica cuántica, de los semiconductores y de la ciencia de materiales, teniendo como resultado numerosas aplicaciones tecnológicas que han cambiado nuestras vidas drásticamente en los últimos 50 años. Una de las ramas de la Física de la Materia Condensada es el…

Multi-anvil pressDiamond-anvil cellCharacterization under pressureOptical absorptionPressure sensorUNESCO::FÍSICAEquations of stateNanocrystallinePressure transmitting mediumBulkPressure-temperature phase diagramParis-Edinburg pressX-ray diffractioncorundum-type structure (R-3c):FÍSICA [UNESCO]Indium oxide (In2O3)Raman spectroscopycubic structure (Ia-3)High-pressure high-temperature synthesisPbcn phaseAb initio calculationsPbca phaseScanning electron microscopySynchrotron radiation sources
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Electrical and photovoltaic properties of indium‐tin‐oxide/p‐InSe/Au solar cells

1987

Conditions for efficiency improvement and optimization in indium‐tin‐oxide/p‐indium‐selenide solar cells are discussed in this paper. This aim is achieved by using low‐resistivity p‐indium‐selenide and by incorporating a back‐surface‐field contact. This contact is insured by a p‐indium selenide/gold barrier whose rectifying behavior is explained through the complex impurity structure of p‐indium‐selenide. Electrical and photovoltaic properties of the cells are also reported. The efficiency parameters under AM1 simulated conditions have been improved up to 32 mA/cm2 for the short‐circuit current density, 0.58 V for the open‐circuit voltage, and 0.63 for the filling factor. As a result, solar…

OptimizationMaterials sciencePerformanceIndium OxidesGeneral Physics and Astronomychemistry.chemical_elementEfficiencyPhotovoltaic effectIndium Selenide Solar CellsPhotovoltaic Effectchemistry.chemical_compound:FÍSICA [UNESCO]Selenidebusiness.industryElectrical PropertiesOptimization ; Efficiency ; Indium Selenide Solar Cells ; Performance ; Indium Oxides ; Tin Oxides ; Photovoltaic Effect ; Electrical Properties ; Experimental DataPhotovoltaic systemEnergy conversion efficiencyUNESCO::FÍSICATin OxidesSolar energyIndium tin oxidechemistryExperimental DataOptoelectronicsbusinessCurrent densityIndiumJournal of Applied Physics
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