Now showing items 1-20 of 60

    • 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 ...
    • Annealing effects on the conduction mechanisms of p+-amorphous- Si0.8C0.2:H/n-crystalline-Si diodes 

      Marsal Garví, Lluís F.; Martín García, Isidro; Pallarés Marzal, Josep; Orpella García, Alberto; Alcubilla González, Ramón (American Institute of Physics, 2003-08-15)
      Article
      Restricted access - publisher's policy
      P1-type hydrogenated amorphous silicon–carbon (a-Si12xCx :H) on n-type crystalline silicon (c-Si) heterojunction diodes were fabricated and characterized electrically. The effects of thermal annealing on the electrical ...
    • Colloidal crystal wires 

      Tymczenko, M; Marsal, L E; Todorov Trifonov, Trifon; Rodriguez, Isabelle; Ramiro-Manzano, F; Pallares, J; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Meseguer, F (2008-06-18)
      Article
      Restricted access - publisher's policy
      Several configurations of colloidal wires are obtained by infiltration of charge-stabilized polystyrene spheres into cylindrical pores of a silicon membrane (see figure). As channel dimensions are comparable to those of ...
    • CVD graphene-FET based cascode circuits: a design exploration and fabrication towards intrinsic gain enhancement 

      Iannazzo Soteras, Mario Enrique; Alarcón Cot, Eduardo José; Pandey, Himadri; Passi, V.; Lemme, M. C. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      This paper presents the design exploration of a basic cascode circuit (CAS) targeted to increase the intrinsic gain A# of a graphene field-effect-transistor (GFET) by decreasing its output conductance go. First, the ...
    • Depósito y caracterización de capas de Teflón sobre Silicio para la realización de dispositivos EWOD 

      Hernandez Coarasa, Antonio (Universitat Politècnica de Catalunya, 2011-06-14)
      Master thesis (pre-Bologna period)
      Open Access
      Català: Estudi de diferents mètodes de dipòsit de tefló i el seu efecte sobre la funcionabilitat final d'un sistema basat en la tecnologia EWOD
    • Design of a phase locked loop for optical upconversion 

      Herranz Salazar, Francisco (Universitat Politècnica de Catalunya, 2018-05)
      Master thesis
      Open Access
      Silicon Photonics has become a key technology in the design of devices for the next generation of wireless communications. One of the most important challenges of 5G is the transport of microwave signals over fiber links, ...
    • Development and characterization of hybrid membranes based on an organic matrix modified with silanes for metal separation 

      Resina Gallego, Montserrat; Macanás de Benito, Jorge; de Gyves Marciniak, Josefina; Muñoz Tapia, Maria (2007-02-15)
      Article
      Restricted access - publisher's policy
      New hybrid membranes for metal ion transport were synthesized with the aim of improving mechanical and chemical stabilities, mean lifetime and loss of carrier. Hybrid organic–inorganic materials present several advantages ...
    • Development of thin films deposited by ALD for c-Si solar cells 

      Pérez Guardia, Javier (Universitat Politècnica de Catalunya, 2017-01)
      Bachelor thesis
      Open Access
      In this work, we have developed thin layers deposited by Atomic Layer Deposition (ALD) technique to be applied in high-efficiency crystalline silicon solar cells. In particular, we selected to study the aluminium oxide ...
    • Dielectric metal dielectric antireflection plasmonic layers 

      Ros Costals, Eloi (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      Dielectric/Metal/Dielectric structures using Transition Metal Oxides (TMOs) as a dielectric layer and very thin-film layers of metal will be fabricated and their opto-electrical properties evaluated. In particular, ...
    • Disseny i muntatge d'un convertidor d'alta eficiencia 

      Paradell Solà, Pol (Universitat Politècnica de Catalunya, 2016-04-20)
      Master thesis
      Open Access
      L’objectiu d’aquest projecte és crear un prototip d’un convertidor trifàsic de dos nivells amb la tecnologia de carbur de silici (SiC). Dins l’objectiu de crear un convertidor trifàsic, hi ha diferents fites que hem ...
    • Effect of amorphous silicon carbide layer thickness on the passivation quality of crystalline silicon surface 

      Ferré Tomas, Rafel; Martín García, Isidro; Vetter, Michael; Garin Escriva, Moises; Alcubilla González, Ramón (American Institute of Physics, 2005-11-09)
      Article
      Restricted access - publisher's policy
      Surface passivation of p-type crystalline silicon wafers by means of phosphorus-doped hydrogenated amorphous silicon carbide films [a-SiCx(n):H] has been investigated. Particularly, we focused on the effects of layer ...
    • Effect of liquid aluminium alloy and ultrasound to corrosion resistance of PVD coating 

      Palau Cruz, Damià (Universitat Politècnica de Catalunya, 2017-01)
      Master thesis
      Restricted access - author's decision
      Covenantee:   Università degli Studi di Brescia
      The aim of the project is resolve the corrosion problems of a steel bar, coating them and study if the coating affects the vibration needed to delate the dendrites of the aluminium alloy due to obtain a globular structure. ...
    • Estudi i fabricació de cristalls fotònics basats en silici macroporós 

      Martí Alcaire, Ferran (Universitat Politècnica de Catalunya, 2014-09-15)
      Master thesis (pre-Bologna period)
      Restricted access - confidentiality agreement
    • Estudio de técnicas de metalización para la fabricación de células solares 

      Parra Santos, Ester (Universitat Politècnica de Catalunya, 2016-06)
      Bachelor thesis
      Open Access
      This work is part of two large projects carried out by two researchers from the Polytechnic University of Catalonia, which aim to manufacture Interdigitated Back-Contact silicon solar cells (IBCs) using processes at low ...
    • Fabricacion y caracterizacion de guias opticas integradas sobre sustratos de silicio 

      Torner Sabata, Lluís; Alcubilla González, Ramón; Calderer Cardona, Josep (1991)
      Conference report
      Open Access
      Silicon nitride (Si 3 N4 ) planar optical waveguides have been successfully grown by lowpressure chemical vapor deposition (LPCVD). Silicon p-type wafers with a (100) orientation were used as substrates, and the Si3 N4 was ...
    • Fabricación de dispositivos fotónicos integrados 

      Granados Martín, Javier (Universitat Politècnica de Catalunya, 2017-10)
      Bachelor thesis
      Open Access
      The project consists of the design and manufacture of photonic crystals based on macroporous silicon. By means of a lithography we can engrave a pattern on the substrate of the silicon wafers in which we will mark the place ...
    • Fabricación de un sensor solar de alta precisión en dos ejes para el satélite SeoSat 

      Calle Martín, Eric (Universitat Politècnica de Catalunya, 2011-09-06)
      Master thesis (pre-Bologna period)
      Open Access
      English: The goal of this project is the fabrication of a two axis sun sensor for the attitude control of the SeoSat satellite. This sensor should detect the position of the sun with high accuracy and at an angle FOV (Field ...
    • Fabricación de un sensor solar en dos ejes para el satélite IntaMicroSat 

      Calle Martín, Eric (Universitat Politècnica de Catalunya, 2011-07-15)
      Master thesis (pre-Bologna period)
      Open Access
      English: he goal of this project is the fabrication of a two axis sun sensor for the attitude control of the IntaMicroSat satellite. This sensor should detect the position of the sun with high accuracy (±1 º) and at an ...
    • Fabrication and characterization of in-situ doped a-Si0.8C0.2 emitter bipolar transistors 

      Orpella García, Alberto; Puigdollers i González, Joaquim; Bardés Llorensí, Daniel; Alcubilla González, Ramón; Marsal, L F; Pallarès Marzal, Josep (2000-09)
      Article
      Restricted access - publisher's policy
      Silicon–carbon emitters were deposited by plasma enhanced chemical vapour deposition (PECVD) on a conventional silicon transistor base. The resulting transistors were annealed after the emitter had been deposited which led ...
    • First use of macroporous silicon loaded with catalyst film for a chemical reaction: a microreformer for producing hydrogen from ethanol steam reforming 

      Llorca Piqué, Jordi; Casanovas Grau, Albert; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2008-04-25)
      Article
      Restricted access - publisher's policy
      Macroporous silicon with millions of parallel microchannels per square centimeter can be used as a micromonolithic support for high-speed catalysis in miniaturized systems, opening a new and exciting field of research and ...