• Enhanced stability in semi-transparent PTB7/PC71BM photovoltaic cells 

      Romero Gómez, Pablo; Betancur Lopera, Rafael; Martinez Otero, Alberto; Elias Pera, Xavier; Mariano, Marina; Romero, Beatriz; Arredondo, Belen; Vergaz, Ricardo; Martorell Pena, Jordi (2015-06-01)
      Article
      Accés obert
      We studied the performance over time of opaque and semi-transparent PTB7:PC71BM bulk heterojunction solar cells. For unsealed inverted configuration cells we observe that when the isolation from the environment is improved, ...
    • Intermittent chaos for ergodic light trapping in a photonic fiber plate 

      Mariano, Marina; Kozyreff, Gregory; Gerling Sarabia, Luis Guillermo; Romero Gómez, Pablo; Puigdollers i González, Joaquim; Bravo Abad, Jorge; Martorell, Jordi (2016-12-30)
      Article
      Accés obert
      Extracting the light trapped in a waveguide, or the opposite effect of trapping light in a thin region and guiding it perpendicular to its incident propagation direction, is essential for optimal energetic performance in ...
    • Light coupling into the Whispering Gallery Modes of a fiber array thin film solar cell for fixed partial Sun tracking 

      Mariano, Marina; Rodriguez, Francisco J.; Romero Gómez, Pablo; Kozyreff, Gregory; Martorell Pena, Jordi (MACMILLAN PUBLISHERS LIMITED, 2014-05-14)
      Article
      Accés obert
      We propose the use of whispering gallery mode coupling in a novel configuration based on implementing a thin film cell on the backside of an array of parallel fibers. We performed numerical calculations using the parameters ...
    • Measurement of the dispersion of air and of refractive index anomalies by wavelength- dependent nonlinear interferometry 

      Macovez, Roberto; Mariano, Marina; Di Finizio, Sergio; Martorell Pena, Jordi (2009-07-27)
      Article
      Accés obert
      We carry out wavelength-dependent second harmonic interference experiments using thin films of an organic dye as nonlinear optical sources. While the measured difference of refractive index between the fundamental and ...
    • Molecular conformation in organic films from quantum chemistry ab initio calculations and second harmonic spectroscopy 

      Macovez, Roberto; López, Núria; Mariano, Marina; Maymó Camós, Marc; Martorell Pena, Jordi (2012-11-30)
      Article
      Accés restringit per política de l'editorial
      Identifying molecular species and conformations at surfaces is of interest for both catalytic and biointerfacial research. Here, we present an extinction and second harmonic spectroscopy study of films of crystal violet ...
    • Semi-transparent polymer solar cells 

      Romero-Gómez, Pablo; Pastorelli, Francesco; Mantilla-Pérez, Paola; Mariano, Marina; Martínez-Otero, Alberto; Elias, Xavier; Betancur, Rafael; Martorell Pena, Jordi (SPIE, 2015-02-16)
      Article
      Accés obert
      Over the last three decades, progress in the organic photovoltaic field has resulted in some device features which make organic cells applicable in electricity generation configurations where the standard silicon-based ...
    • Semi-transparent polymer solar cells 

      Romero Gómez, Pablo; Pastorelli, Francesco; Mantilla Perez, Paola; Mariano, Marina; Martinez Otero, Alberto; Elias Pera, Xavier; Betancur Lopera, Rafael; Martorell Pena, Jordi (2015-02-16)
      Article
      Accés obert
      Over the last three decades, progress in the organic photovoltaic field has resulted in some device features which make organic cells applicable in electricity generation configurations where the standard silicon-based ...