Now showing items 1-12 of 281

  • A self-branched lamination of hierarchical patronite nanoarchitectures on carbon fiber cloth as novel electrode for ionic liquid electrolyte-based high energy density supercapacitors 

    Manikandan, Ramu; Justin Raj, Chellan; Nagaraju, Goli; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal (2019-11-14)
    Article
    Restricted access - publisher's policy
    The developments of rationally designed binder-free metal chalcogenides decorated flexible electrodes are of paramount importance for advanced energy storage devices. Herein, binder-free patronite (VS4) flower-like ...
  • Capacitance study of a polystyrene nanoparticle capacitor using impedance spectroscopy 

    Véliz Noboa, Bremnen Marino; Orpella García, Alberto; Bermejo Broto, Sandra (2019-07-19)
    Article
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    In this study, a metal-insulator-metal capacitor structure is fabricated using polystyrene nanoparticles. Impedance spectroscopy is used to evaluate the performance of this capacitor in which we found a significant magnitude ...
  • Near 5% DMSO is the best: a structural investigation of PEDOT: PSS thin films with strong emphasis on surface and interface for hybrid solar cell 

    Mahato, Somnath; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Mukhopadhyay, Mala; Mukherjee, Manabendra; Hazra, Satyajit (2019-09-10)
    Article
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    Effect of dimethyl sulfoxide (DMSO) doping on poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) thin films have been optimized for obtaining better hole transport layer in hybrid solar cell. The correlation ...
  • Acceleration of the measurement time of thermopiles using sigma-delta control 

    Domínguez Pumar, Manuel; perez, eduard; Ramon, Marina; Jiménez Serres, Vicente; Bermejo Broto, Sandra; Pons Nin, Joan (Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-18)
    Article
    Open Access
    This work presents a double sliding mode control designed for accelerating the measurement of heat fluxes using thermopiles. The slow transient response generated in the thermopile, when it is placed in contact with the ...
  • Transport mechanisms in silicon heterojunction solar cells with molybdenum oxide as a hole transport layer 

    García Hernansanz, Rodrigo; Garcia Hemme, E.; Montero, D.; Olea Ariza, Javier; Prado Millán, Álvaro del; Martil, Ignacio; Voz Sánchez, Cristóbal; Gerling Sarabia, Luis Guillermo; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2018-10-01)
    Article
    Open Access
    Heterojunction solar cells based on molybdenum sub-oxide (MoOx) deposited on n-type crystalline silicon have been fabricated. The hole selective character of MoOx is explained by its high workfunction, which causes a strong ...
  • 3D simulations of interdigitated back-contacted crystalline silicon solar cells on thin substrates 

    Jin, Chen; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; Calle Martín, Eric; Alcubilla González, Ramón (2018-06-01)
    Article
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    Interdigitated back contact technology is a promising candidate to be applied to thin crystalline silicon solar cells because of its simpler one-side interconnection while allowing a more flexible front surface treatment. ...
  • Bipolar transistor vertical vertical scaling framework 

    Castañer Muñoz, Luis María; Alcubilla González, Ramón; Benavent, A (1994-12)
    Article
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    Scaling factors for current and transit time are derived for polysilicon emitter, silicon based heterojunction bipolar transistors. It is shown that a simple set of analytical equations in integral form can be used to ...
  • Analysis of the conductance transient in thick film tin oxide gas sensors 

    Vilanova, X; Llobet Valero, Eduard; Alcubilla González, Ramón; Sueiras, Jl; Correig, X (Elsevier, 1996-03)
    Article
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    In this paper, we analyse the conductance transient of a Taguchi TGS-822 sensor under a step change in the vapour concentration. A diffusion-limited range in the conductance transient is observed. Adjustments between the ...
  • Space charge recombination in p-n junctions with a discrete and continous trap distribution 

    Pallarès Marzal, Josep; Marsal Garví, Lluís Francesc; Correig, Xavier; Calderer Cardona, Josep; Alcubilla González, Ramón (1997-01)
    Article
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    Space charge Shockley-Read-Hall recombination currents in the presence of discrete or continuous distributions of recombination centres are analysed. For a single level trap, depending on its position inside the forbidden ...
  • Analytical modelling of bjt neurtral base region under variable injection conditions 

    Bardés Llorensí, Daniel; Alcubilla González, Ramón (1997-08)
    Article
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    We present a set of closed form analytical solutions of the transport equation in the base of bipolar transistors. The presented 1D solutions hold for variable injection conditions, arbitrary doping profiles and arbitrary ...
  • Electrical properties of PECVD amorphous silicon-carbon alloys from amorphous-crystalline heterojunctions 

    Marsal Amenós, Félix; Pallarés Viña, Miguel Juan; Correig Blanchar, Francesc Xavier; Domínguez Pumar, Manuel; Bardés Llorensí, Daniel; Calderer Cardona, Josep; Alcubilla González, Ramón (1997-08)
    Article
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    Heterojunction diodes fabricated by plasma enhanced chemical vapour deposition of n-type amorphous silicon carbide on p-type crystalline silicon are analysed by measuring their current-voltage characteristics. Two carrier ...
  • Distribution of recombination currents in the space charge of heterostructure bipolar devices 

    Pallares, J; Marsal, L F; Correig, X; Calderer Cardona, Josep; Alcubilla González, Ramón (1998-01)
    Article
    Open Access
    This paper addresses the problem of the space charge region Shockley-Read-Hall (SRH) recombination currents in heterojunctions with one noncrystalline side. A formulation which generalizes previous works is discussed. The ...