Ara es mostren els items 30-49 de 150

    • Effect of buffer layer on minority carrier lifetime and series resistance of bifacial heterojunction silicon solar cells analyzed by impedance spectroscopy 

      Garcia Belmonte, G; García Cañadas, J; Mora-Seró, I; Bisquert, J; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2006-07)
      Article
      Accés restringit per política de l'editorial
      By combining information on solar cell layer structure and electrical response analyzed by impedance spectroscopy, relevant knowledge is obtained about photogenerated carriers recombination and extraction. The inclusion ...
    • Effect of permanent dipole layers in the electrical characteristics of electronic devices and solar cells 

      Ros Costals, Eloi; Pusay Villarroel, Benjamín Andrés; Almache Hernández, Rosa Estefanía; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim (2019)
      Comunicació de congrés
      Accés obert
    • Effect of the thickness of amorphous silicon carbide interlayer on the passivation of c-Ge surface by aluminium oxide films 

      Martín García, Isidro; López Rodríguez, Gema; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim (Elsevier, 2022-07)
      Article
      Accés restringit per política de l'editorial
      Surface passivation is of paramount importance in photovoltaic devices based on high-quality crystalline absorbers such as crystalline germanium (c-Ge). In this work, we report on the surface passivation of p-type c-Ge by ...
    • Electrical characterization of pentacene thin-film transistors with polymeric gate dielectric 

      Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Martín García, Isidro; Vetter, Michael; Orpella García, Alberto; Alcubilla González, Ramón (2004-11)
      Article
      Accés restringit per política de l'editorial
      Pentacene thin films obtained by thermal evaporation at room temperature have been incorporated as the active layer in bottom-gate thin-film transistors (TFTs). The dielectric was spin-cast polymethyl methacrylate (PMMA) ...
    • Electronic properties of intrinsic and doped amorphous silicon carbide films 

      Vetter, Michael; Voz Sánchez, Cristóbal; Ferré Tomas, Rafel; Martín García, Isidro; Orpella García, Alberto; Puigdollers i González, Joaquim; Andreu Batallé, Jordi; Alcubilla González, Ramón (2006-07)
      Article
      Accés restringit per política de l'editorial
      Hydrogenated amorphous silicon carbide (a-SiCx : H) films have shown excellent surface passivation of crystalline silicon. With the aim of large area deposition of these films the influence of the rf plasma power was ...
    • Electronic transport in low temperature nanocrystalline silicon thin-film transistors obtained by hot-wire CVD 

      Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Orpella García, Alberto; Martín García, Isidro; Soler Vilamitjana, David; Fonrodona, Marta; Bertomeu Balaguero, Joan; Andreu Batallé, Jordi; Alcubilla González, Ramón (2002-04)
      Article
      Accés restringit per política de l'editorial
      Hydrogenated nanocrystalline silicon (nc-Si:H) obtained by hot-wire chemical vapour deposition (HWCVD) at low substrate temperature (150 °C) has been incorporated as the active layer in bottom-gate thin-film transistors ...
    • Emitter formation using laser doping technique on n- and p-type c-Si substrates 

      López Rodríguez, Gema; Ortega Villasclaras, Pablo Rafael; Colina Brito, Mónica Alejandra; Voz Sánchez, Cristóbal; Morales Vilches, Ana Belén; Orpella García, Alberto; Alcubilla González, Ramón (2015-05-01)
      Article
      Accés obert
      In this work laser doping technique is used to create highly-doped regions defined in a point-like structure to form n+/p and p+/n junctions applying a pulsed Nd-YAG 1064 nm laser in the n ...
    • Engineering redox active sites enriched 3D-on-2D bimetallic double layered hydroxide electrode for supercapatteries 

      Pugalenthiyar, Thondaiman; Justin Raj, Chellan; Velayutham, Rajavel; Dennyson Savariraj, Antonysamy; Manikandan, Ramu; Voz Sánchez, Cristóbal; Chul Kim, Byung (2022-10)
      Article
      Accés restringit per política de l'editorial
      The functionalization of structural nanoengineered battery-type electrodes has aided the emergence of supercapattery (SCp) subclass, which enables a wide range of applications. Herein, our research work provides a platform ...
    • Ephocell project: smart light collecting system for the efficiency enhancement of solar cells - ray trace modeling of system 

      Aubouy, Laurent; Gutiérrez-Tauste, D.; Della Pirriera, Monica; Noriega, G.; Di Lorenzo, M.L.; Avella, M.; Errico, M.E.; Gentile, G.; Kennedy, M.; Doran, J.; Norton, B.; Ahmed, H.; Baluschev, S.; Bistué Guardiola, J.; Hervera, F.; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Daren, S.; Solomon-Tsvetkov, F.; Pashov, A. (2012)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      PV cell efficiency is limited partly due to the spectral mismatch between the solar spectrum and the PV absorption properties. PV conversion efficiency is enhanced by external modulation of the incident irradiance, by means ...
    • Examen Final 

      Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2021-01-05)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Prat Viñas, Lluís; Ortega Villasclaras, Pablo Rafael; López González, Juan Miguel; Martín García, Isidro; Fernández, Mireia; Bermejo Broto, Sandra; Altet Sanahujes, Josep; Puigdollers i González, Joaquim; Rodriguez, Angel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2015-01-16)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Altet Sanahujes, Josep; Bermejo Broto, Sandra; Fernández Chimeno, Mireya; Martín García, Isidro; Orpella García, Alberto; Ortega Villasclaras, Pablo Rafael; Prat Viñas, Lluís; Puigdollers i González, Joaquim; Rodríguez Martínez, Ángel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2013-01-08)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Orpella García, Alberto; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2017-06-13)
      Examen
      Accés restringit a la comunitat UPC
    • EXAMEN FINAL 

      Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2022-01)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      López González, Juan Miguel; Prat Viñas, Lluís; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2013-06-14)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2022-01)
      Examen
      Accés restringit a la comunitat UPC
    • Examen Final 

      Bermejo Broto, Sandra; Fernández Chimeno, Mireya; Guede Fernández, Federico; Martín García, Isidro; López González, Juan Miguel; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Rodríguez Martínez, Ángel; Vargas Drechsler, Manuel; Voz Sánchez, Cristóbal (Universitat Politècnica de Catalunya, 2019-01-15)
      Examen
      Accés restringit a la comunitat UPC
    • Expanding the perspective of polymeric selective contacts in photovoltaic devices using branched polyethylenimine 

      Ros Costals, Eloi; Tom, Thomas; Rovira Ferrer, David; Lopez Vidrier, Julià; Masmitjà Rusiñol, Gerard; Pusay Villarroel, Benjamín Andrés; Almache Hernández, Rosa Estefanía; Martín García, Isidro; Jiménez Guerra, Maykel; Saucedo Silva, Edgardo Ademar; Tormos, Eva; Asensi López, José Miguel; Ortega Villasclaras, Pablo Rafael; Bertomeu Balagueró, Joan; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal (American Chemical Society (ACS), 2022-09-05)
      Article
      Accés obert
      This work studies the use of polymeric layers of polyethylenimine (PEI) as an interface modification of electron-selective contacts. A clearly enhanced electrical transport with lower contact resistance and significant ...
    • Experimental determination of base resistance contribution for point-like contacted c-Si solar cells using impedance spectroscopy analysis 

      Orpella García, Alberto; Martín García, Isidro; López González, Juan Miguel; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2015-10)
      Article
      Accés obert
      One of the most common strategies in high-efficiency crystalline silicon (c-Si) solar cells for the rear surface is the combination of a dielectric passivation with a point-like contact to the base. In such devices, the ...
    • Experimental observation of oxygen-related defect state in pentacene thin films 

      Nadaždy, Vojtech; Durný, Rudolf; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Cheylan, Stephanie; Gmucová, K. (American Institute of Physics, 2007-02-28)
      Article
      Accés restringit per política de l'editorial
      The authors report on a metastable defect observed in pentacene thin films. The defect, which is characterized by a hole trap at Ev+0.6 eV and attempt-to-escape frequency of 5x1012 s−1, can be reversibly created/removed ...