Search results for "c-Si solar cell"

showing 3 items of 3 documents

Characterization of the defect density states in MoOx for c-Si solar cell applications

2021

Thin layers of MoOx have been deposited by thermal evaporation followed by post-deposition annealing. The density of states distributions of the MoOx films were extracted deconvoluting the absorption spectra, measured by a photothermal deflection spectroscopy setup, including the small polaron contribution. Results revealed a sub-band defect distribution centered 1.1 eV below the conduction band; the amplitude of this distribution was found to increase with post-deposition annealing temperature and film thickness.

Materials scienceAbsorption spectroscopyc-Si solar cell photovoltaic transition metal oxide molybdenum oxide density of states small polaronAnnealing (metallurgy)02 engineering and technologyPolaron01 natural sciencesMolecular physicsSettore ING-INF/01 - Elettronicalaw.inventionlaw0103 physical sciencesSolar cellMaterials ChemistryElectrical and Electronic EngineeringSpectroscopy010302 applied physicsThin layersDensity of statesPhotothermal therapy021001 nanoscience & nanotechnologyCondensed Matter Physicsc-Si solar cellMolybdenum oxideElectronic Optical and Magnetic MaterialsSmall polaronTransition metal oxideDensity of states0210 nano-technologyPhotovoltaicDensity of state
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Low-cost high-haze films based on ZnO nanorods for light scattering in thin c-Si solar cells

2015

Light scattering from ZnO nanorods (NR) is investigated, modeled, and applied to a solar cell. ZnO NR (120-1300 nm long, 280-60 nm large), grown by low-cost chemical bath deposition at 90 degrees C, exhibit diffused-to-total transmitted light as high as 70% and 30% in the 400 and 1000 nm wavelength range, respectively. Data and scattering simulation show that ZnO NR length plays a crucial role in light diffusion effect. A transparent ZnO NR film grown on glass and placed on top of a 1 mu m thick c-Si solar cell is shown to enhance the light-current conversion efficiency for wavelengths longer than 600 nm. (C) 2015 AIP Publishing LLC.

SiliconMaterials sciencePhysics and Astronomy (miscellaneous)SiliconZnO nanorod Silicon solar cellschemistry.chemical_elementNanorodSettore ING-INF/01 - ElettronicaSettore FIS/03 - Fisica Della MateriaLight scatteringlaw.inventionlawSolar cellZinc oxide C-Si solar cellChemical-bath depositionbusiness.industryScatteringSolar cellEnergy conversion efficiencyWide-bandgap semiconductorLight scatteringCurrent conversion efficiencychemistryLight diffusionScattering simulationOptoelectronicsNanorodTransmitted lightbusinessWavelength rangeChemical bath depositionApplied Physics Letters
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Characterization of defect density states in MoOx for c-Si solar cell applications

Layers of MoOx have been deposited by thermal evaporation followed by post-deposition annealing (PDA). The density of states (DOS) distributions of the MoOx films were extracted deconvoluting the absorption spectra, measured by a phothermal deflection spectroscopy setup, including the small polaron contribution. Results revealed a sub-band defect distribution centered 1.1 eV below the conduction band; the amplitude of this distribution was found to increase with PDA temperature and film thickness.

c-Si solar cell photovoltaic transition metal oxide molybdenum oxide density of states small polaronSettore ING-INF/01 - Elettronica
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