Exploració per tema "Semiconductors"

Ara es mostren els items 1-20 de 82

    • A high step-up Z-source-flyback converter with integrated inductors for photovoltaic applications 

      Hamed, Moradmand Jazi; Davoodi, Bita; Soltani, Mohsen; Martínez García, Herminio; Velasco Quesada, Guillermo (2021-12-30)
      Article
      Accés obert
      Increasing the voltage gain by means of Z-source network will provide some features such as low voltage stress of semiconductor devices, low duty cycle of the switch and low reverse recovery problem of output diode that ...

    • A model for photocurrent generation in photoconductive antennas 

      López Menchón, Héctor; Revuelta Martinez, Sergio; Santos Blanco, M. Concepción; Romeu Robert, Jordi; Rius Casals, Juan Manuel (2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The laser-induced current carrier generation and transport under large biasing voltages in photoconductive materials located in electrode gap region of photoconductive antennas is a complex process involving many different ...

    • A Novel commutation sequence for the three-level active neutral-point-clamped inverter to aid in splitting switching and conduction losses among the semiconductor devices 

      Caballero Diaz, Luis; Busquets Monge, Sergio; Ratés Palau, Sergi (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The three-level neutral-point-clamped (3L-NPC) topology is competitive in the large wind energy conversion systems (WECS) thanks to its simple implementation and proper performance compared to other topologies. However, ...

    • 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)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      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 ...

    • An image cytometer based on angular spatial frequency processing and its validation for rapid detection and quantification of waterborne microorganisms 

      Pérez-Rosas, Juan Miguel; Jofre Cruanyes, Marc; Martínez, Pedro; Yañez, M. Adela; Catalan, Vicente; Pruneri, Valerio (2015)
      Article
      Accés restringit per política de l'editorial
      We introduce a new image cytometer design for the detection of very small particulates and demonstrate its capability in water analysis. The device is a compact microscope composed of off-the-shelf components, such as a ...

    • Automatització d'un forn de difusió i caracterització d'emissors de bor 

      Masmitjà Rusiñol, Gerard (Universitat Politècnica de Catalunya, 2013-07-22)
      Projecte Final de Màster Oficial
      Accés obert
      [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 ...

    • Benefits of finer semiconductor device granularity on power converter thermal stress and MTTF 

      Rafiezadeh, Roya; Busquets Monge, Sergio; Alepuz Menéndez, Salvador (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This article explores the thermal and reliability benefits of configuring the power semiconductor block of power converters with several small standard power semiconductor devices instead of a few larger ones at a fixed ...

    • Binary coherent beam combining with semiconductor TA at 705 

      Icaza Astiz, Yannik Alan de (Universitat Politècnica de Catalunya, 2009-09-08)
      Projecte Final de Màster Oficial
      Accés obert
      We present a coherent-beam-combining (CBC) experiment using a 795 nm diode laser as a technique to achieve more power by combining two beams. Two Gaussian beams are made to interfere while controlling polarization, ...

    • Carrier selective contact characterization using work function bender buffer layers 

      Capella Guardià, Francesc Xavier (Universitat Politècnica de Catalunya, 2022-06)
      Treball Final de Grau
      Accés obert
      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 ...

    • Characterization setup for the experimental study of time-dependent variability phenomena in nanoscale circuits 

      Romano Molar, Àlex (Universitat Politècnica de Catalunya, 2023-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   IMEC Belgium
      This project consists in an internship at IMEC Belgium for four months. It can be divided in two major parts: Building a chip-oriented prober and conducting some experiments about reliability on chip.

    • Communication system for a tooth-mounted RF sensor used for continuous monitoring of nutrient intake 

      Zufía Mier, Pablo (Universitat Politècnica de Catalunya, 2019-09-06)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   University of California, Irvine
      In this Thesis, the communication system of a wearable device that monitors the user’s diet is studied. Based in a novel RF metamaterial-based mouth sensor, different decisions have to be made concerning the system’s ...

    • Constant common-mode voltage strategies using sigma-delta modulators in five-phase VSI 

      Acosta Cambranis, Fernando Geovany; Zaragoza Bertomeu, Jordi; Berbel Artal, Néstor; Capellá Frau, Gabriel José; Romeral Martínez, José Luis (Institute of Electrical and Electronics Engineers (IEEE), 2023-03)
      Article
      Accés obert
      This paper proposes and studies different sigma-delta () modulation strategies for obtaining a constant common-mode voltage (CMV) by eliminating the CMV level transitions in a five-phase voltage source inverter (VSI). These ...

    • Degradation study and calculation of density-of-states in PTCDI-C8 channel layer from the electrical characteristics of thin-film transistors 

      Shijeesh, Methattel R.; Vikas, L. S.; Jayaraj, M. K.; Puigdollers i González, Joaquim (American Institute of Physics (AIP), 2014-07-14)
      Article
      Accés restringit per política de l'editorial
      N-type organic thin film transistor (OTFT) with a top-contact structure was fabricated by thermal vapour deposition using N,N'-Dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) as an n-channel layer on Si/SiO2 substrate. ...

    • Design and fabrication of a single electron transistor (SET) 

      Aizpurua Iraola, Gorka (Universitat Politècnica de Catalunya, 2023-07-12)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Institut de Microelectrònica de Barcelona
      In this master's thesis, the design and development of the manufacturing process of a single electron transistor (SET) in silicon has been carried out. A SET is a basic building block for the realization of qubits based ...

    • Design and implementation of a power transistor temperature measurement circuit for a multilevel active-clamped power converter 

      Guolo, Federico (Universitat Politècnica de Catalunya, 2017-09-13)
      Treball Final de Grau
      Accés obert
      Semiconductor power switches are largely considered the most fragile components in power electronic converters. In order to increase the reliability of power devices, it is important to avoid high junction temperatures and ...

    • Development of a setup to measure photoconductivity of GeSn 

      Roset i Julià, Laura (Universitat Politècnica de Catalunya, 2019-07-12)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   École polytechnique fédérale de Lausanne
      Esta tesis se focaliza en el diseño y desarrollo de un equipo para mesurar la fotoconductividad del GeSn. El equipo consiste en una lámpara de halógeno y tungsteno, un monocromador, un espejo parabólico y un circuito óptico ...

    • Digital twin for supply chain improvements on the example of Infineon technologies AG 

      Bribian Melendez, Marta (Universitat Politècnica de Catalunya, 2019-10-09)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Infineon Technologies
      This project has been developed in the semiconductor manufacturing company Infineon Technologies AG, in Neubiberg (Germany). The project is focused on Digital Twins and Semantic Web. Digital Twins are the ultimate solutions ...

    • Discrete-Event Simulations for the Optimization of Testing Costs: Case Study from the Semiconductor Industry 

      Puyuelo García, Natalia (Universitat Politècnica de Catalunya, 2021-10-11)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Infineon Technologies
      Infineon is one of the world’s leaders in semiconductor solutions. Barely visible, semiconductors have become an indispensable part of our daily life. Nevertheless, the semiconductor manufacturing is by far one of the most ...

    • Diseño de células solares utilizando CdSe QDs 

      Alcorisa Sanz, Javier (Universitat Politècnica de Catalunya, 2012-05-14)
      Projecte/Treball Final de Carrera
      Accés obert
      [ANGLÈS] Throughout this project it is intended to study the electrical properties of Quantum Dots, semiconductor nanoparticles, by manufacturing various kinds of solar cells and to analyze their characteristics. Each new ...

    • Diseño de un convertidor estático DC/DC Phase-Shifted Full-Bridge con soft-switching 

      Hanu, Razvan Ionel (Universitat Politècnica de Catalunya, 2023-01-27)
      Treball Final de Grau
      Accés obert
      L'energia elèctrica es pot generar de diverses maneres i, per poder-la emprar en diferents aplicacions domèstiques i industrials actuals, és imprescindible disposar d'equips de conversió que permetin transformar-la entre ...