Search results for "Solar cell"

We analyze the main nanochemistry factors affecting photovoltaic performance in TiO2 employed as wide bandgap semiconductor in dye-sensitized solar cells (DSCs). What is the best morphology of the oxide? Which processes yield the required structures? Finally, putting the discussion in the context of the rapid evolution of photovoltaic technologies, we argue that new titania nanostructures will form the basic component of second-generation solar modules based on dye solar cells.

Settore ING-IND/24 - Principi Di Ingegneria ChimicaMaterials scienceNanostructureRenewable Energy Sustainability and the EnvironmentPhotovoltaic systemWide-bandgap semiconductorNanochemistryContext (language use)NanotechnologyHybrid solar cellQuantum dot solar cellPollutionDye-sensitized solar cellNuclear Energy and Engineeringmesoporous titania dye-sensitized solar cellsEnvironmental Chemistry

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Apparato di commutazione

2012

La presente invenzione si riferisce ad un apparato di commutazione per il controllo e l'impostazione della configurazione circuitale dei pannelli di un modulo fotovoltaico.

Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaRiconfigurazione di sistemi fotovoltaicipartial shading reconfigurable photovoltaic array irradiance electrical mismatch optimization reconfiguration algorithm mathematical model TCT SP interconnection dynamic array monitoring solar cell switching matrix MPPT

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Donor/acceptor heterojunction organic solar cells

2017

Organic solar cells (OSCs) have made very good improvements in recent years, reaching power conversion efficiencies above 10% [1]. This have been achieved through chemical synthesis of new organic materials with improved properties and also by new and more or less complex structures such as donor/acceptor (D/A) or bulk heterojunction OSCs. Here we report the results of initial development of OSCs based on the simple D/A heterojunction [2]. Copper phtalocyanine (CuPc) is used as donor organic material, whereas perylenetetracarboxylic dianhydride (PTCDA) and fullerene (C60) as acceptor organic materials. Moreover bathocuproine (BCP) is used as exciton blocking layer. Devices are fabricated by…

Settore ING-INF/01 - ElettronicaOrganic Electronics Organic solar cells organic materials and devices

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Non-uniform doping concentration CIGS absorber profile for highefficiency solar cells

2016

The quaternary chalcopyrite semiconductor alloy Cu(In,Ga)Se2 (CIGS) is nowadays commonly considered one of the most suitable materials to fabricate cost-effective and high-efficiency photovoltaic cells. Thanks to the optical and structural properties of the absorber layer and to the tunable bandgap, thin-film CIGS cells have reached efficiencies around 20%, not far from the maximum values of traditional crystalline silicon cells. This high efficiency, together with the conceivable low fabrication costs, makes CIGS cells a promising alternative to silicon technology for large-scale production. In order to further improve the cells performance, in a previous work we have already proposed a si…

Settore ING-INF/02 - Campi ElettromagneticiCIGS simulations solar cell photovoltaicsSettore ING-INF/01 - Elettronica

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Electrical characterization of high-efficiency bifacial silicon solar cells

2018

This work presents a preliminary study on the electrical characterization of high efficiency bifacial solar cells. An opening discussion on the state-of-the-art of such advanced technology is initially proposed and the experimental characterization of some prototypes is described. From this analysis, it can be stated that the bifacial silicon solar cells can be a very promising technology with high electrical performances and efficiency.

Silicon solar cells Solar cellsSilicon heterojunctionSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - Elettronica

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Broadband photocurrent enhancement in a-Si:H solar cells with plasmonic back reflectors

2014

The authors acknowledge Francesco Ruffino for the AFM measurements. This work was funded by the EU FP7 Marie Curie Action FP7-PEOPLE-2010-ITN through the PROPHET project (Grant No. 264687), the bilateral CNR/AVCR project "Photoresponse of nanostructures for advanced photovoltaic applications", the MIUR project Energetic (Grant no. PON02_00355_3391233) and by the Portuguese Science Foundation (FCT-MEC) through the Strategic Project PEst-C/CTM/LA0025/2013-14 and the research project PTDC/CTM-ENE/2514/2012. Plasmonic light trapping in thin film silicon solar cells is a promising route to achieve high efficiency with reduced volumes of semiconductor material. In this paper, we study the enhance…

SiliconMaterials scienceConformal growthSiliconchemistry.chemical_elementPlasmon02 engineering and technologyFILMS01 natural sciences7. Clean energySilver A-Si:H solar cellSettore ING-INF/01 - ElettronicaLight scatteringOptics0103 physical sciencesPhotocurrentFabrication parameterPlasmonic solar cellThin filmSILICONPhotocurrent enhancementPlasmon010302 applied physicsPhotocurrentbusiness.industryLight scattering021001 nanoscience & nanotechnologySolar energyScattering effectAtomic and Molecular Physics and OpticschemistryDiffuse reflectionOptoelectronicsDiffuse reflectionThin-film silicon solar cells Silicon solar cells0210 nano-technologybusinessSilver nanoparticle (NPs)Optics Express

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