Browsing by Subject "Silici porós"

Now showing items 1-9 of 9

    • Compact device for CO2 optical sensign using macroporous silicon photonic crystals 

      Vega, Didac; Rodríguez Martínez, Ángel; Calavia, Raül; Vilanova, Xavier; Todorov Trifonov, Trifon (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Restricted access - publisher's policy
      A photonic crystal based on a macroporous silicon structure has been fabricated and successfully used for the detection of carbon dioxide. In this paper, the device and the measurement results are presented. The sensing ...

    • Electronic transport in low temperature nanocrystalline silicon thin-film transistors obtained by hot-wire CVD 

      Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Orpella García, Alberto; Martín García, Isidro; Soler Vilamitjana, David; Fonrodona, Marta; Bertomeu Balaguero, Joan; Andreu Batallé, Jordi; Alcubilla González, Ramón (2002-04)
      Article
      Restricted access - publisher's policy
      Hydrogenated nanocrystalline silicon (nc-Si:H) obtained by hot-wire chemical vapour deposition (HWCVD) at low substrate temperature (150 °C) has been incorporated as the active layer in bottom-gate thin-film transistors ...

    • Fabricación de estructuras para cristales fotónicos basados en silicio macroporoso 

      Lange Vega, Diego (Universitat Politècnica de Catalunya, 2009-07)
      Master thesis
      Open Access
      Este proyecto tiene como objetivo fabricar estructuras de níquel utilizando silicio macroporoso como molde. La aplicación inicial de estas estructuras es el diseño y fabricación de cristales fotónicos de níquel. Para ...

    • High efficiency black silicon Interdigitated Back Contacted solar cells on p- and n-type c-Si substrates 

      Ortega Villasclaras, Pablo Rafael; Calle, Eric; von Gastrow, Guillaume; Repo, Päivikki; Carrió, David; Savin, Hele; Alcubilla, Ramón (2015)
      Article
      Open Access
      This work demonstrates the high potential of Al2O3 passivated black silicon in high-efficiency interdigitated back contacted (IBC) solar cells by reducing surface reflectance without jeopardizing surface passivation. Very ...

    • High-density capacitor devices based on macroporous silicon and metal electroplating 

      Vega, Didac; Reina Marsinyach, Jordi; Pavón Urbano, Ramón; Rodríguez Martínez, Ángel (2014-01)
      Article
      Restricted access - publisher's policy
      This paper presents a novel technique for the fabrication of ultrahigh capacitance structures based on macroporous silicon. Electrochemical etching is used to create a 3-D template in silicon. These structures reach high ...

    • Macroporous silicon microreactor for the preferential oxidation of CO 

      Divins, N.J.; López, E.; Llorca, J.; Vega, Didac; Rodríguez Martínez, Ángel; González de Rivera, F.; Angurell, I.; Seco, M.; Rossell, O. (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      A macroporous silicon micromonolith containing ca. 40,000 regular channels of 3.3 μm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) ...

    • Micro and nanophotonic structures in the visible and near infrared spectral for optical devices 

      Nghiem, Xuan Tan (Universitat Politècnica de Catalunya / Universitat Autònoma de Barcelona, 2013-09-10)
      Master thesis
      Open Access
      [ANGLÈS] This thesis present the simulation program for 1D photonic crystals and fabrication process of nano-structured optical devices based on porous silicon layers prepared by electrochemical etching method and the ...

    • Semiconducting P3HT microstructures: fibres and tubes obtained from macroporous silicon template 

      Palacios, R; Formentin, P; Todorov Trifonov, Trifon; Estrada del Cueto, Magali; Alcubilla González, Ramón; Pallares, J; Marsal, L F (2008-10)
      Article
      Restricted access - publisher's policy
      Microtubes and microfibres composed of poly(3-hexylthiophene) (P3HT) were fabricated by melt-assisted templates using ordered macroporous silicon. We have studied the influence of the pore depth and the template type on ...

    • Study of resonant modes in a 700 nm pitch macroporous silicon photonic crystal 

      Cardador Maza, David; Vega Bru, Didac; Segura García, Daniel; Rodríguez Martínez, Ángel (2017-01-01)
      Article
      Open Access
      In this study the modes produced by a defect inserted in a macroporous silicon (MP) photonic crystal (PC) have been studied theoretical and experimentally. In particular, the transmitted and reflected spectra have been ...