Now showing items 1-20 of 82

  • 2D/3D Simulations of black-silicon interdigitated back-contacted c-si(n) solar cells 

    Calle Martín, Eric; Carrió, David; Ortega Villasclaras, Pablo Rafael; von Gastrow, Guillaume; Savin, Hele; Martín García, Isidro; Alcubilla González, Ramón (WIP Renewable Energies, 2016)
    Conference lecture
    Open Access
    Black silicon (b-Si) reduces drastically light reflectance in the front side of c-Si solar cells to values near zero for the whole absorbed solar spectrum. In this work, we apply 2D and 3D simulations to explore the ...
  • 3Cat-1: a multi-payload Cubesat-based scientific and technology demonstrator 

    Jové Casulleras, Roger; Camps Carmona, Adriano José; Ramos Castro, Juan José; Alarcón Cot, Eduardo José; Bou Balust, Elisenda; Carreño Luengo, Hugo; Amézaga Sarries, Adrià; Olivé Muñiz, Roger; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Araguz López, Carles; Marí Barceló, Marc; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Gorreta Mariné, Sergio; Domínguez Pumar, Manuel; Iannazzo Soteras, Mario Enrique (European Spatial Agengy (ESA), 2014)
    Conference lecture
    Open Access
  • 3Cat-1 project: a multi-payload CubeSat for scientific experiments and technology demonstrators 

    Jové Casulleras, Roger; Araguz López, Carles; Via Ortega, Pol; Solanellas Bofarull, Arnau; Amézaga Sarries, Adrià; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Marí Barceló, Marc; Olivé Muñiz, Roger; Sáez Hernández, Alberto; Jané Abad, Jaume; Bou Balust, Elisenda; Iannazzo Soteras, Mario Enrique; Gorreta Mariné, Sergio; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Domínguez Pumar, Manuel; Alarcón Cot, Eduardo José; Ramos Castro, Juan José; Camps Carmona, Adriano José (2017)
    Article
    Open Access
    This article introduces 3 Cat-1, the first project of the Technical University of Catalonia to build and launch a nano-satellite. Its main scope is to develop, construct, assemble, test and launch into a low Earth orbit a ...
  • 3D simulations of back-contact back-junction c-Si(P) solar cells with doped point contacts 

    Carrió, D.; Ortega Villasclaras, Pablo Rafael; López, Gema; López González, Juan Miguel; Martín García, Isidro; Voz Sánchez, Cristóbal; Alcubilla González, Ramón (2013)
    Conference report
    Restricted access - publisher's policy
    The back-contact back-junction BC-BJ solar cell concept is a promising photovoltaic structure for both laboratory and industrial c-Si solar cells. High efficiency devices based on this concept have been reported in the ...
  • 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
    Restricted access - publisher's policy
    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. ...
  • 3D TCAD modeling of laser processed c-Si solar cells 

    López González, Juan Miguel; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; Orpella García, Alberto; Alcubilla González, Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    This paper presents an 3D TCAD model of crystalline Silicon (c-Si) solar cells. Physical parameters used in the model are discussed. Simulation results are compared to experimental current-voltage curves and solar cell ...
  • Accurate and wide field of view MEMS-based sun sensor for industrial applications 

    Delgado, Francisco; Quero, J.M.; Garcia Ortega, Juan; López Tarrida, Cristina; Ortega Villasclaras, Pablo Rafael; Bermejo Broto, Sandra (IEEE Press. Institute of Electrical and Electronics Engineers, 2012-02-24)
    Article
    Restricted access - publisher's policy
    This paper describes the design, fabrication, simulation, and experimental results of an improved miniaturized two-axis sun sensor for industrial applications, created by adapting a technology used previously in satellite ...
  • Adjust of solar cell model parameters based in MATLAB 

    Silvestre Bergés, Santiago; Guasch Murillo, Daniel; Ortega Villasclaras, Pablo Rafael; Navarro, Nacho (M. C. Acero, M. Lozano - CNM-CSIC, 2003)
    Conference lecture
    Restricted access - publisher's policy
    In this work, a model parameter extractor of solar cells using Matlab is shown. The software, developed in Matlab environment, has been successfully applied to study internal characteristics of photovoltaic devices [1-2], ...
  • Advances in a baseline process towards high efficiency c-Si solar cell fabrication 

    Alcubilla González, Ramón; Ortega Villasclaras, Pablo Rafael; López, G.; Martín García, Isidro; Bermejo Broto, Sandra; Blanqué, Servane; García Molina, Francisco Miguel; Orpella García, Alberto; Voz Sánchez, Cristóbal (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-02-11)
    Conference report
    Open Access
  • A miniaturized two axis sun sensor for attitude control of nano-satellites 

    Angulo, M.; Gras, Ana; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Ricart Campos, Jordi; Domínguez Pumar, Manuel; Castañer Muñoz, Luis María; Quero, J.M.; Tarrida, C. L.; Reina, M. (2010-10-10)
    Article
    Open Access
    This paper describes the design, fabrication, characterization, and satellite integration of a miniaturized two axis sun sensor which has been used in the attitude control system of the Spanish nano-satellite NANOSAT-1B. ...
  • Analysis of the Atomic Layer Deposited Al2O3 field-effect passivation in black silicon 

    von Gastrow, Guillaume; Alcubilla González, Ramón; Ortega Villasclaras, Pablo Rafael; Yli-Koski, Marko; Conesa-Boj, Sònia; Fontcuberta i Morral, Anna; Savin, Hele (2015-11)
    Article
    Open Access
    We demonstrate that n-type black silicon can be passivated efficiently using Atomic Layer Deposited (ALD) Al2O3, reaching maximum surface recombination velocities below 7 cm/s. We show that the low surface recombination ...
  • Analysis of the dynamic short-circuit resistance in organic bulk-heterojunction solar cells: relation to the charge carrier collection efficiency 

    Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Asensi López, José Miguel; Galindo Lorente, Sergi; Cheylan, S.; Pacios, R.; Ortega Villasclaras, Pablo Rafael; Alcubilla González, Ramón (2013-06)
    Article
    Restricted access - publisher's policy
    This work studies the charge carrier collection efficiency in organic bulk-heterojunction solar cells based on polymer:fullerene blends. An equivalent circuit with a specific recombination term is proposed to describe the ...
  • An efficient fault diagnosis method for PV systems based on operating voltage-window 

    Gokmen, Nuri; Karatepe, Engin; Silvestre Bergés, Santiago; Celik, Berk; Ortega Villasclaras, Pablo Rafael (2013-09)
    Article
    Restricted access - publisher's policy
    With the increasing use of photovoltaic (PV) systems, the research studies to improve the efficiency of PV systems have gained greater interest in recent years, especially under non-uniform operating conditions. However, ...
  • A new design of high precision solar microsensor for satellite aplications 

    Delgado, Francisco; Ortega Villasclaras, Pablo Rafael; Lopez Tarrida, Cristina; Garcia Ortega, Juan; Angulo, Manuel; Quero Reboul, Jose Manuel (IEEE, 2010)
    Conference report
    Restricted access - publisher's policy
    This paper shows the design and calibration of an improved miniaturized two-axis sun sensor for satellite attitude control. The proposed new structure is based on a previous sun sensor structure by adding multiple sensing ...
  • An IBC solar cell for the UPC CubeSat-1 mission 

    Ortega Villasclaras, Pablo Rafael; Jové Casulleras, Roger; Pedret, A; Gonzalvez, G.; López Rodríguez, Gema; Martín García, Isidro; Domínguez Pumar, Manuel; Alcubilla González, Ramón; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    In this work the fabrication and electrical characterization of interdigitated back contact IBC solar cells is shown. These solar cells have been specifically designed for a CubeSat based satellite under developement at ...
  • 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
  • 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 ...
  • 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 ...
  • Boron diffused emitters passivated with Al2O3 films 

    Masmitja Rusinyol, Gerard; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Calle Martín, Eric; García Molina, Francisco Miguel; Martín García, Isidro; Orpella García, Alberto; Voz Sánchez, Cristóbal; Alcubilla González, Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    In this work we study the fabrication and characterization of boron diffused emitters using FZ c-Si(n) substrates. Emitter surface was passivated with Al2O3(25 nm thick) layers deposited by thermal atomic layer deposition ...
  • 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 ...