Now showing items 21-40 of 195

  • A two-resonance tapping cavity for an optimal light trapping in thin-film solar cells 

    Liu, Quan; Romero Gómez, Pablo; Mantilla Perez, Paola; Colodrero, Silvia; Toudert, Johann; Martorell Pena, Jordi (2017-09-20)
    Article
    Open Access
    An optimal photon absorption in thin film photovoltaic technologies can only be reached by effectively trapping the light in the absorber layer provided a considerable portion of the photons is rejected or scattered out ...
  • Automatització d'un forn de difusió i caracterització d'emissors de bor 

    Masmitjà Rusiñol, Gerard (Universitat Politècnica de Catalunya, 2013-07-22)
    Master thesis
    Open Access
    [ENGLISH] In this project has presented the work of doing the diffusion furnace automation and of doing the fabrication and characterization of boron emitters. A programming from scratch has been designed in order to be ...
  • Back junction n-type silicon heterojunction solar cells with V2O5 hole-selective contact 

    Gerling Sarabia, Luis Guillermo; Masmitjà Rusiñol, Gerard; Voz Sánchez, Cristóbal; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Alcubilla González, Ramón (Elsevier, 2016)
    Conference lecture
    Open Access
  • Banco de pruebas para panel fotovoltaico 

    Casellas Beneyto, Francisco; Piqué López, Robert; Velasco Quesada, Guillermo; Martínez García, Herminio (Universidad Miguel Hernández de Elche, 2016)
    Conference report
    Open Access
    Las condiciones operativas reales de un panel fotovoltaico (PV: PhotoVoltaic) en relación a las especificadas por el fabricante, la degradación de sus parámetros con el paso del tiempo, las condiciones climáticas y la ...
  • Base contacts and selective emitters processed by laser doping technique for p-type IBC c-Si solar cells 

    López Rodríguez, Gema; Ortega Villasclaras, Pablo Rafael; Martín García, Isidro; Voz Sánchez, Cristóbal; Morales Vilches, Ana Belén; Orpella García, Alberto; Alcubilla González, Ramón (2015-08-28)
    Article
    Open Access
    Abstract In this work, we describe a novel fabrication process of p-type interdigitated back contact (IBC) silicon solar developed by means of laser doping and laser firing techniques. We use dielectric layers both as ...
  • Bifacial heterojunction silicon solar cells by Hot-Wire CVD with open circuit voltage exceeding 600 mV 

    Voz Sánchez, Cristóbal; Muñoz Cervantes, Delfina; Fonrodona, Marta; Martín García, Isidro; Puigdollers i González, Joaquim; Alcubilla González, Ramón; Escarré, Jordi; Bertomeu Balaguero, Joan; Andreu Batallé, Jordi (2006-07)
    Article
    Restricted access - publisher's policy
    Double-sided (bifacial) heterojunction silicon solar cells have been fabricated by Hot-Wire CVD on both p- and n-type crystalline silicon substrates. In these devices, doped microcrystalline silicon layers are combined ...
  • Black silicon solar cells with interdigitated back-contacts achieve 22.1% efficiency 

    Savin, Hele; Repo, Päivikki; von Gastrow, Guillaume; Ortega Villasclaras, Pablo Rafael; Calle, Eric; Garin Escriva, Moises; Alcubilla González, Ramón (2015-05-18)
    Article
    Open Access
    The nanostructuring of silicon surfaces—known as black silicon—is a promising approach to eliminate front-surface reflection in photovoltaic devices without the need for a conventional antireflection coating. This might ...
  • Breaking the Open-Circuit Voltage Deficit Floor in PbS Quantum Dot Solar Cells through Synergistic Ligand and Architecture Engineering 

    Pradhan, Santanu; Stavrinadis, Alexandros; Gupta, Shuchi; Christodoulou, Sotirios; Konstantatos, Gerasimos (ACS, 2017-05-24)
    Article
    Open Access
    To realize the full potential of colloidal quantum dot (CQD) based solar cells, it is important to address the issue of large open-circuit voltage (VOC) deficit which is a major roadblock in reaching higher efficiencies. ...
  • Células fotovoltaicas con un rendimiento del 20.5% 

    Alcubilla González, Ramón; García Molina, Francisco Miguel; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Orpella García, Alberto; Martín García, Isidro; Colina, M.; Voz Sánchez, Cristóbal; Bermejo Broto, Sandra; Puigdollers i González, Joaquim (Grupo Acorde Comunicación (GAC), 2011-03-01)
    Article
    Restricted access - publisher's policy
    Un grupo de investigadores de la Universitat Politècnica de Catalunya (UPC) han desarrollado un proceso de fabricación que permite obtener rendimientos de conversión fotovoltaicos del 20,5%. Esto supone una mejora sustancial ...
  • Celulas solares y sistemas fotovoltaicos. Manual de prácticas 

    Ramos Lara, Rafael Ramón; Biel Solé, Domingo (2009-09)
    Other
    Open Access
    Manual de prácticas de la asignatura optativa
  • Characterization and application of a-SiCx:H films for the passivation of the c-Si surface 

    Martín Campos, Ignacio Clemente; Vetter, M; Orpella García, Alberto; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Marsal, L F; Pallarès Marzal, Josep; Alcubilla González, Ramón (2002-01)
    Article
    Restricted access - publisher's policy
    In this work we investigate the effects of typical thermal treatments on c-Si surface passivation by intrinsic a-SiCx:H films. First, a forming gas anneal (FGA), (400 °C, 30 min in H2/N2) is applied resulting in an improvement ...
  • Characterization of a-Si:H/c-Si interfaces by effective-lifetime measurements 

    Garin Escriva, Moises; Rau, U; Bredle, W; Martín García, Isidro; Alcubilla González, Ramón (American Institute of Physics (AIP), 2005-11)
    Article
    Restricted access - publisher's policy
    This article studies theoretically and experimentally the recombination at the amorphous/crystalline silicon interface of a heterojunction with intrinsic thin layer (HIT) structure without metallization. We propose a ...
  • Characterization of bifacial heterojunction Silicon solar cells obtained by Hot-Wire CVD 

    Muñoz Cervantes, Delfina; Voz Sánchez, Cristóbal; Fonrodona, Marta; Garin Escriva, Moises; Orpella García, Alberto; Vetter, Michael; Puigdollers i González, Joaquim; Alcubilla González, Ramón; Villar, F; Bertoeu, J; Andreu Batallé, Jordi (2006-07)
    Article
    Restricted access - publisher's policy
    In this work, we study bifacial heterojunction silicon solar cells fabricated by hot-wire CVD on both p- and n-type crystalline silicon substrates. In these devices, hydrogenated microcrystalline silicon doped layers are ...
  • Characterization of small molecule organic solar cells by variable light intensity measurements 

    Gerling Sarabia, Luis Guillermo (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2013-05)
    Master thesis
    Open Access
    A medida que las energías renovables tienen un mayor peso en el mercado energético, y el sector fotovoltaico tiende hacia menores costos de fabricación y reducido impacto ambiental, las Celdas Solares Orgánicas (CSO) ofrecen ...
  • Characterization of transition metal Oxide/Silicon heterojunctions for solar cell applications 

    Gerling Sarabia, Luis Guillermo; Mahato, Somnath; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Puigdollers i González, Joaquim (2015-10-09)
    Article
    Open Access
    During the last decade, transition metal oxides have been actively investigated as hole- and electron-selective materials in organic electronics due to their low-cost processing. In this study, four transition metal oxides ...
  • Circumventing UV light induced nano-morphology disorder to achieve long lifetime PTB7-Th:PCBM based solar cells 

    Liu, Quan; Toudert, Johann; Liu, Feng; Mantilla-Perez, Paola; Montes Bajo, Miguel; Russell, Thomas P.; Martorell, Jordi (Wiley, 2017-07-17)
    Article
    Open Access
    Large area flexible electronics rely on organic or hybrid materials prone to degradation limiting the device lifetime. For many years, photo-oxidation has been thought to be one of the major degradation pathways. However, ...
  • Circumventing UV light induced nanomorphology disorder to achieve long lifetime PTB7-Th:PCBM based solar cells 

    Liu, Quan; Toudert, Johann; Liu, Fengqing; Mantilla Perez, Paola; Montes Bajo, Miguel; Rusell, Thomas P.; Martorell Pena, Jordi (2017-07-17)
    Article
    Open Access
    Large area flexible electronics rely on organic or hybrid materials prone to degradation limiting the device lifetime. For many years, photo-oxidation has been thought to be one of the major degradation pathways. However, ...
  • “Cold” process for IBC c-Si solar cells fabrication 

    López Rodríguez, Gema; Ortega Villasclaras, Pablo Rafael; Martín García, Isidro; Voz Sánchez, Cristóbal; Orpella García, Alberto; Alcubilla González, Ramón (Elsevier, 2016)
    Conference lecture
    Open Access
  • Comparison of simulation models for Perovskite solar cells 

    Silvestre Bergés, Santiago; Mas-Marza, Elena; Puigdollers i González, Joaquim; Fabregat-Santiago, Francisco; Alfonso, Valero G (WIP Renewable Energies, 2016)
    Conference report
    Restricted access - publisher's policy
    In this work, a comparison of two models for the simulation of the electrical behavior of perovskite solar cells is presented. The two models considered are the well-known one diode model and an analytical model recently ...
  • Conjugated polymers as functional hole selective layers in efficient metal halide perovskite solar cells 

    Colodrero, Silvia (AIMS Press, 2017-08-29)
    Article
    Open Access
    Interface engineering is still an open question to be solved in the emerging field of metal halide perovskite solar cells. Although impressive advances have been already made in controlling the composition and the quality ...