0000000000047030

AUTHOR

Lluis M. Guia

showing 3 related works from this author

MOCVD growth of CdO very thin films: Problems and ways of solution

2016

Abstract In this paper the growth of CdO by the MOCVD technique at atmospheric pressure has been studied in order to achieve very thin films of this material on r-sapphire substrates. The growth evolution of these films was discussed and the existence of a threshold thickness, below which island-shaped structures appear, was demonstrated. Some alternatives to reduce this threshold thickness have been proposed in the frame of the analysis of the crystal growth process. The morphology and structural properties of the films were analyzed by means of SEM and HRXRD. High-quality flat CdO samples were achieved with thicknesses up to 20 nm, which is five times thinner than the values previously re…

010302 applied physicsMaterials scienceAtmospheric pressureGeneral Physics and AstronomyNanotechnologyCrystal growth02 engineering and technologySurfaces and InterfacesGeneral Chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesSurfaces Coatings and Films0103 physical sciencesMetalorganic vapour phase epitaxyThin filmComposite material0210 nano-technologyApplied Surface Science
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Effect of Growth Temperature on the Structural and Morphological Properties of MgCdO Thin Films Grown by Metal Organic Chemical Vapor Deposition

2017

II-VI oxides ternary alloys have attracted considerable interest of the scientific community due to the possibility of modulating their interesting optoelectronic properties. Despite this interest, MgCdO has been poorly studied. In this work, by using the metal organic chemical vapor deposition method at low pressure, we have analyzed the synthesis of thin films of this alloy. Thus, for a fixed metal-organic precursors content, a change from Mg1-xCdxO (Mg-rich phase) to Cd1-xMgxO (Cd-rich phase) has been induced when decreasing the growth temperature. The temperature range where both phases coexist has been particularly analyzed. Using X-ray diffraction analysis and scanning electron micros…

Materials scienceScanning electron microscopeAlloyAnalytical chemistryQuímica organometàl·lica02 engineering and technologyChemical vapor depositionengineering.material01 natural sciencesLattice constantPhase (matter)0103 physical sciencesGeneral Materials ScienceThin filmComputingMilieux_MISCELLANEOUS010302 applied physics[PHYS]Physics [physics]General ChemistryAtmospheric temperature rangeTemperatura021001 nanoscience & nanotechnologyCondensed Matter Physicsengineering0210 nano-technologyTernary operation
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Sensing properties of ZnO nanostructured layers

2017

Nanostructured ZnO layers have been deposited onto SiO 2 /Si substrates by spray pyrolysis, with previously patterned interdigitated gold electrodes. We have then measured the capacitive and resistive response against ambient parameters such as relative humidity and illumination.

Resistive touchscreenMaterials scienceCapacitive sensingHumiditychemistry.chemical_elementZincCapacitanceSpray pyrolysisSemiconductorschemistryElectrodeElectronic engineeringRelative humidityMaterials nanoestructuratsComposite material2017 Spanish Conference on Electron Devices (CDE)
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