Browsing by Subject "Semiconductors"

Now showing items 21-40 of 75

    • Disseny i implementació d’un circuit de test de dispositius semiconductors de potència 

      Andreu Ramis, Xavier (Universitat Politècnica de Catalunya, 2010-06)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      El 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 

      Caño Prades, Ivan; Vidal Fuentes, Pedro; Calvo Barrio, Lorenzo; Alcobé Olle, Xavier; Giraldo, Sergio; Sánchez González, Yudania; Jehl Li-Kao, Zacharie; Placidi, Marcel Jose; Puigdollers i González, Joaquim; Izquierdo Roca, Víctor; Saucedo Silva, Edgardo Ademar; Asensi López, José Miguel (2022-03-09)
      Article
      Open Access
      Sb2Se3 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 ...

    • Doping of solution-processed two-dimensional transition metal dichalcogenides 

      Esteve i Cantero, Marc (Universitat Politècnica de Catalunya, 2021-10-31)
      Master thesis
      Open Access
      Covenantee:   École polytechnique fédérale de Lausanne
      Semiconducting transition metal dichalcogenides (TMDs) such as MoS2, WSe2 or WS2 have attracted a lot of interest in recent years because of their outstanding optoelectronic properties including tunable bandgap or strong ...

    • Early 21st Century processors 

      Vajapeyam, Sriram; Valero Cortés, Mateo (2001-04)
      Article
      Open Access
      The computer architecture arena faces exciting challenges as it attempts to meet the design goals and constraints that new markets, changing applications and fast-moving semiconductor technology impose.

    • Efficiency comparison of power converters based on SiC and GaN semiconductors at high switching frequencies 

      Lumbreras Carrasco, David; Zaragoza Bertomeu, Jordi; Berbel Artal, Néstor; Mon González, Juan; Galvez Moreno, Eduardo; Collado Escolano, Alfonso (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      Hard-switching voltage source converters (VSC) based on wide-bandgap (WBG) devices surpass their silicon equivalents in every aspect. Nevertheless, at high switching frequencies, the efficiency significantly differs depending ...

    • Enhancing hydrogen generation in photocatalysis systems by the use of selective contacts 

      Segura Blanch, Oriol (Universitat Politècnica de Catalunya, 2022-06)
      Bachelor thesis
      Open Access
      Hydrogen stands as a good energy vector to replace fossil fuels due to its high energy density and green production. Moreover, hydrogen can be used to complement other green energy sources. One of the most craved methods ...

    • Espectroscopia de impedancias aplicada a dispositivos semiconductores 

      Sinde Carbajo, Daniel Carlos (Universitat Politècnica de Catalunya, 2016-10)
      Master thesis (pre-Bologna period)
      Open Access
      Este proyecto consiste en el análisis y diseño de células solares de altas prestaciones de diferentes estructuras y características físicas, y otros dispositivos como un microcondensador de gran capacidad (supercondensador), ...

    • Etudier la mise en ceuvre d'un équipement de protection à base de semi-conducteurs 

      Carrasco Ramírez, Marina (Universitat Politècnica de Catalunya / École Supérieure d’Electricité, 2008)
      Master thesis (pre-Bologna period)
      Restricted access - confidentiality agreement

    • Experimental investigations into the effects of electrical stress on electromagnetic emission from integrated circuits 

      Boyer, Alexandre; Dhia, Sonia Ben; Fernández García, Raúl; Berbel Artal, Néstor (2013-07-18)
      Article
      Restricted access - publisher's policy
      Recent studies have shown that the aging of integrated circuits may modify electromagnetic emission significantly. This paper reports on an experiment to elucidate the origins of emis- sion level changes in a test chip ...

    • 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 ...

    • Fabrication of biosensor for the detection of elastase in solution 

      Benkhaled, Mohammed Amin (Universitat Politècnica de Catalunya, 2023-01-23)
      Bachelor thesis
      Open Access
      Les nanopartícules de carboni fluorescents o els punts quàntics de carboni (CQD) són una nova classe de nanomaterials de carboni que han sorgit recentment i han despertat molt d'interès com a competidors potencials dels ...

    • Fabrication of c-Si microstructures through reorganization at high temperatures 

      Solà Garcia, Maria Magdalena (Universitat Politècnica de Catalunya, 2015-06)
      Bachelor thesis
      Open Access
      Silicon photonics has gained increasing interest in recent years as it promises high performance, cost-effective integrated optical devices. The advent of Si fabrication techniques at the micro and nano-scales, in conjunction ...

    • Fabrication of ito-ida microarray electrodes and integration with a fluidic device to be applied as a bioreactor in tissue engineering 

      Rodriguez Moreso, Samuel (Universitat Politècnica de Catalunya, 2018-06)
      Bachelor thesis
      Open Access
      Covenantee:   Institut de Bioenginyeria de Catalunya
      The main objective of this project is the fabrication of a bioreactor to be used in the development of a multi-organ-on-a-chip and the optimization of different parameters that are involved into the fabrication of ITO-IDA ...

    • Fast-processing sigma-delta strategies for three-phase wide-bandgap power converters with common-mode voltage reduction 

      Lumbreras Carrasco, David; Zaragoza Bertomeu, Jordi; Berbel Artal, Néstor; Mon González, Juan; Galvez Moreno, Eduardo; Collado Escolano, Alfonso (Institute of Electrical and Electronics Engineers (IEEE), 2022-02-01)
      Article
      Open Access
      The electromagnetic compatibility of wide-bandgap (WBG) power converters can be greatly improved using spread-spectrum modulation techniques. This article proposes a family of reduced common-voltage sigma–delta modulations ...

    • Gas sensing structures based on metal oxides 

      Hontoria Gámez, Marc (Universitat Politècnica de Catalunya, 2017)
      Bachelor thesis
      Open Access
      Covenantee:   Slovenská technická univerzita v Bratislave
      The purpose of this thesis has been to learn and describe the main concepts about gas sensors based on metal oxides, in order to apply them to real life problems by performing experiments in the framework of an international ...

    • Harmonic balance algorithms for the nonlinear simulation of HTS devices 

      Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; Parrón Granados, Josep; Pons, J.; O'Callaghan Castellà, Juan Manuel; Rius Casals, Juan Manuel (KLUWER ACADEMIC/PLENUM PUBL, 2001-02-28)
      Article
      Open Access
      This paper describes the application of Harmonic Balance algorithms to predict nonlinear effects in planar High Temperature Superconductors (HTS) microwave circuits. The resulting algorithms are fast and efficient and can ...

    • Harmonic generation at the nanoscale in strategic materials for nanophotonics 

      Rodríguez Suñé, Laura; Trull Silvestre, José Francisco; Scalora, Michael; Akozbek, Neset; Cojocaru, Crina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2021)
      Conference report
      Restricted access - publisher's policy
      The use of semiconductors, metals and conductive oxides in the process of fabrication of actual nano devices is at the front edge of nowadays technology, exploiting the properties of light propagation and localization at ...

    • Hole-selective contacts by RF magnetron sputtering for silicon heterojunction solar cell structures 

      Perea Causín, Raül (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      Research in photovoltaic devices is focusing towards cost-effective technologies to compete with traditional energy sources. In this sense, silicon heterojunction (SHJ) solar cells have excelled owing to their high efficiency ...

    • HOMO stabilisation in pi-Extended Dibenzotetrathiafulvalene derivatives for their application in OFETs 

      Geng, Yan; Pfattner, Raphael; Campos García, Antonio; Wang, Wei; Jeannin, Olivier; Hauser, Jürg; Puigdollers i González, Joaquim; Bromley, Stefan T.; Decurtins, Silvio; Veciana Miró, Jaume; Rovira Angulo, Concepció; Mas Torrent, Marta; Liu, Shixia (2014-05-15)
      Article
      Restricted access - publisher's policy
      Three new organic semiconductors, in which either two methoxy units are directly linked to a dibenzotetrathiafulvalene (DB-TTF) central core and a 2,1,3-chalcogendiazole is fused on the one side, or four methoxy groups are ...

    • Improving ASIC HLBs quality of results using design metrics 

      Altayó González, Jordi (Universitat Politècnica de Catalunya, 2018-07-02)
      Bachelor thesis
      Restricted access - confidentiality agreement
      Covenantee:   eSilicon