Now showing items 1-20 of 71

    • 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 ...
    • Advanced control platform for electric motor characterization: comparison of wide bandgap semiconductors in field-oriented control motor application 

      Nowak, Aleksandra (Universitat Politècnica de Catalunya, 2023-01-27)
      Master thesis
      Restricted access - author's decision
      With the growing development and broadening use of semiconductors, it is important to note their differences, advantages and disadvantages. Silicon Carbide (SiC) and Gallium Nitride (GaN) in particular, are two types with ...
    • 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 ...
    • Carrier selective contact characterization using work function bender buffer layers 

      Capella Guardià, Francesc Xavier (Universitat Politècnica de Catalunya, 2022-06)
      Bachelor thesis
      Open Access
      2D materials emerge with a promising future for optoelectronics. First reported in 2011, MXenes have excellent properties such as metallic-like conductivity and high transmittance, thus, they can be used as transparent ...
    • 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 and inverse design of a Grating coupler 

      Valverde Cabezas, Albert (Universitat Politècnica de Catalunya, 2023-10-27)
      Master thesis
      Open Access
      The silicon industry stands as a cornerstone in the realm of modern technology, underpinning an array of innovations that have reshaped the communication paradigm. Among its many contributions, silicon’s integration into ...
    • 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 comparatiu de l'efecte de l'acid monosilísic i el silicat de potassi en el cultiu d'arròs 

      Peiró Jordana, Jan (Universitat Politècnica de Catalunya, 2021-07-15)
      Bachelor thesis
      Open Access
      Objective: To compare the effect of the application of a solution based on monosilicic acid and one based on potassium silicate in rice cultivation. Methodology: A plot was selected for rice production (var. Bomba) and ...
    • 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 ...
    • Estudio reológico de diferentes rutas de formación de geles y sus condiciones 

      Garcia Cabanas, Raquel (Universitat Politècnica de Catalunya, 2024-02-01)
      Master thesis
      Restricted access - confidentiality agreement
      Covenantee:   Zobele España
      Aquest projecte té com a objectiu realitzar un estudi reològic dels gels formats amb sílice pirògena, especialment en el context d'aplicacions de difusió de substàncies volàtils. S'han examinat diverses formulacions amb ...
    • 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 ...