Exploració per tema "Dielectric materials"

Ara es mostren els items 1-8 de 8

    • Efficient analysis of homogeneous dielectric and plasmonic media with integral equation MEI (IE-MEI) 

      Rius Casals, Juan Manuel; Planes Conangla, Gerard; Úbeda Farré, Eduard; Heldring, Alexander (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper revisits the IE-MEI method and proposes a new formulation for high-loss dielectric piecewise-homogeneous media. The aim of this work is to assess if the fast attenuation of fields in highly lossy media helps in ...

    • Fixed charge density in dielectrics deposited on c-Si using space charge region dominated lifetime measurements 

      Garin Escriva, Moises; Martín García, Isidro; Bermejo Broto, Sandra; Alcubilla González, Ramón (American Institute of Physics, 2007-06-29)
      Article
      Accés restringit per política de l'editorial
      Depletion region modulation (DRM) effect is often observed in photoconductance lifetime measurements of crystalline silicon wafers passivated by dielectric films. This effect is closely related to the space-charge region ...

    • Integral Equation MEI (IE-MEI) analysis of 2D homogeneous lossy dielectric and plasmonic scatterers 

      Planes Conangla, Gerard (Universitat Politècnica de Catalunya, 2015-09-04)
      Projecte/Treball Final de Carrera
      Accés obert
      This work revisits the IE-MEI method, previously only applied to perfect conductors, and proposes a new formulation for high-loss dielectric piecewise-homogeneous media. The aim is to assess if the fast attenuation of elds ...

    • Intermediate amorphous silicon layer for crystalline silicon passivation with alumina 

      García Valenzuela, J. A.; Caballero Lorenzo, Álvaro; Asensi, J.M.; Bertomeu Balaguero, Joan; Andreu Batallé, Jordi; Gerling Sarabia, Luis Guillermo; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal (WIP Wirtschaft und Infrastruktur GmbH & Co. Planungs-KG, 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The passivation of silicon surfaces is required to reach high-efficiency with most of modern solar cell device structures. It has been demonstrated that the deposition of charged dielectric layers such a-SiNx:H or Al2O3 ...

    • Ku-band flat lens design for satellite TV applications 

      Imbert Villà, Marc; Romeu Robert, Jordi; Jofre Roca, Lluís; Papió, Anna; de Flaviis, Franco (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, the design of a dielectric flat lens to operate in the Ku-band for satellite communications is presented. Modern dishes intended for home television are generally bulky and heavy. Moreover, the costs of ...

    • Machine learning assisted multifrequency AFM: Force model prediction 

      Elsherbiny, Lamiaa; Santos, Sergio; Gadelrab, Karim Raafat; Olukan, Tuza; Font Teixidó, Josep; Barcons Xixons, Víctor; Chiesa, Matteo (American Institute of Physics (AIP), 2023-12-05)
      Article
      Accés obert
      Multifrequency atomic force microscopy (AFM) enhances resolving power, provides extra contrast channels, and is equipped with a formalism to quantify material properties pixel by pixel. On the other hand, multifrequency ...

    • Simultaneous gettering and emitter formation in multicrystalline-Si wafers by annealing phosphorus doped amorphous silicon compounds 

      Ferré, R.; Martín García, Isidro; Trassl, Roland; Alcubilla González, Ramón; Brendel, Rolf (2011-01-10)
      Article
      Accés restringit per política de l'editorial
      We demonstrate gettering of metal impurities in p-type multicrystalline silicon (mc-Si) wafers by annealing wafers that are surface passivated by double layers of amorphous silicon-based compounds acting as gettering sites. ...

    • Topology optimization of flexoelectric metamaterials with apparent piezoelectricity 

      Greco, Francesco; Codony Gisbert, David; Mohammadi, Hossein; Fernández Méndez, Sonia; Arias Vicente, Irene (Elsevier, 2024-02-01)
      Article
      Accés obert
      The flexoelectric effect, coupling polarization and strain gradient as well as strain and electric field gradients, is universal to dielectrics, but, as compared to piezoelectricity, it is more difficult to harness as it ...