Browsing by Subject "Semiconductors"
Now showing items 1-20 of 70
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A high step-up Z-source-flyback converter with integrated inductors for photovoltaic applications
(2021-12-30)
Article
Open AccessIncreasing 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
(2019)
Conference lecture
Restricted access - publisher's policyThe 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
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyThe 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, ... -
An image cytometer based on angular spatial frequency processing and its validation for rapid detection and quantification of waterborne microorganisms
(2015)
Article
Restricted access - publisher's policyWe 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
(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 ... -
Benefits of finer semiconductor device granularity on power converter thermal stress and MTTF
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Restricted access - publisher's policyThis 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
(Universitat Politècnica de Catalunya, 2009-09-08)
Master thesis
Open AccessWe 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
(Universitat Politècnica de Catalunya, 2022-06)
Bachelor thesis
Open Access2D 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 ... -
Communication system for a tooth-mounted RF sensor used for continuous monitoring of nutrient intake
(Universitat Politècnica de Catalunya, 2019-09-06)
Master thesis
Open Access
Covenantee: University of California, IrvineIn 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
(Institute of Electrical and Electronics Engineers (IEEE), 2022-05-03)
Article
Open AccessThis 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
(American Institute of Physics (AIP), 2014-07-14)
Article
Restricted access - publisher's policyN-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 implementation of a power transistor temperature measurement circuit for a multilevel active-clamped power converter
(Universitat Politècnica de Catalunya, 2017-09-13)
Bachelor thesis
Open AccessSemiconductor 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
(Universitat Politècnica de Catalunya, 2019-07-12)
Bachelor thesis
Open Access
Covenantee: École polytechnique fédérale de LausanneEsta 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
(Universitat Politècnica de Catalunya, 2019-10-09)
Master thesis
Restricted access - author's decision
Covenantee: Infineon TechnologiesThis 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
(Universitat Politècnica de Catalunya, 2021-10-11)
Master thesis
Restricted access - author's decision
Covenantee: Infineon TechnologiesInfineon 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
(Universitat Politècnica de Catalunya, 2012-05-14)
Master thesis (pre-Bologna period)
Open Access[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 ... -
Dispersion management in spatially modulated broad band semiconductors
(IEEE, 2011)
Conference report
Restricted access - publisher's policy -
Disseny d'un programari de control per aplicacions basades en oscil·ladors digitals polsats (pdo)
(Universitat Politècnica de Catalunya, 2014-11)
Master thesis
Open Access[ANGLÈS] Nowadays the micro and nanotechnologies investigation group has three kinds of resonators technologies based in MEMS (micro-electro-mechanical devices) technology which are thermoelectric, electrostatic and ... -
Disseny i implementació d’un circuit de test de dispositius semiconductors de potència
(Universitat Politècnica de Catalunya, 2010-06)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEl present projecte final de carrera s'emmarca dins de l’àmbit de dispositius semiconductors de potència emprats com a interruptors. El camp d’aplicació dels interruptors semiconductors de potència és ampli, sent-ne un ... -
Does Sb2Se3 admit nonstoichiometric conditions? How modifying the overall se content affects the structural, optical, and optoelectronic properties of Sb2Se3 thin films
(2022-03-09)
Article
Open AccessSb2Se3 is a quasi-one-dimensional (1D) semiconductor, which has shown great promise in photovoltaics. However, its performance is currently limited by a high Voc deficit. Therefore, it is necessary to explore new strategies ...
