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Ara es mostren els items 183-200 de 200

    • TCO-free low-temperature p+ emitters for back-junction c-Si solar cells 

      Martín García, Isidro; Coll Valentí, Arnau; López Rodríguez, Gema; Ortega Villasclaras, Pablo Rafael; Desrues, Thibaut; Orpella García, Alberto; Alcubilla González, Ramón (Elsevier, 2015-08-28)
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      Accés obert
      In this work, we report on the fabrication and characterization of n-type c-Si solar cells whose p+ emitters are based on laser processed aluminum oxide/silicon carbide (Al2O3/SiCx) films. The p+ emitter is defined at the ...

    • Template fabrication of 3D metallic microstructures by electrochemical etching and electroplanting 

      Hernández Díaz, David; Lange, Diego; Todorov Trifonov, Trifon; Garin Escriva, Moises; García Molina, Francisco Miguel; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2010)
      Text en actes de congrés
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      In this work, we show that macroporous silicon consisting of periodic arrays of etched pores is a feasible alternative for synthesis of 2D and 3d metallic microstructures due to its flexibility in the definition of complex ...

    • Templated growth of tungsten oxide micro/nanostructures using aerosol assisted chemical vapour deposition 

      Blackman, Cs; Correig, X; Katko, V; Mozalev, A; Parkin, I P; Alcubilla González, Ramón; Todorov Trifonov, Trifon (2008-12)
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      Accés restringit per política de l'editorial
      Porous anodized alumina (PAA) and macroporous silicon (MS) substrates have been used to template the growth of tungsten oxide via aerosol assisted chemical vapour deposition from the precursor tungsten hexaphenoxide. The ...

    • Textured PDMS films applied to thin crystalline silicon solar cells 

      Rosell, Arnau; Martín García, Isidro; Garin Escriva, Moises; López Rodríguez, Gema; Alcubilla González, Ramón (2019-12-18)
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      Accés obert
      Front surface texturization is a standard procedure used to improve optical properties of photovoltaic devices. In some particular cases, such as when dealing with ultrathin substrates, common texturization techniques can ...

    • The origin of emitter-like recombination for inverted c-Si surfaces 

      Martín García, Isidro; Hoex, B; Sanden, M C M van de; Alcubilla González, Ramón; Kessels, W M M (WIP Wirtschaft und Infrastruktur GmbH & Co. Planungs-KG, 2008)
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      c-Si samples whose surface passivation is based on highly inverted surfaces experimentally show a decrease in effective lifetime at low illumination levels while a flat dependence is expected from the current theoretical ...

    • Thermal emission of macroporous silicon chirped photonic crystals 

      Garin Escriva, Moises; Todorov Trifonov, Trifon; Hernández García, David; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2010-09-15)
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    • Thin film transistors obtained by hot wire CVD 

      Puigdollers i González, Joaquim; Orpella García, Alberto; Dosev, D; Voz Sánchez, Cristóbal; Peiró, D; Pallarés, J; Marsal, L F; Bertomeu Balaguero, Joan; Andreu Batallé, Jordi; Alcubilla González, Ramón (2000-05)
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      Accés restringit per política de l'editorial
      Hydrogenated microcrystalline silicon films obtained at low temperature (150–280°C) by hot wire chemical vapour deposition at two different process pressures were measured by Raman spectroscopy, X-ray diffraction (XRD) ...

    • Thin IBC c-Si solar cells based on conventional technologies 

      Jin, Chen; Martín García, Isidro; Calle Martín, Eric; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Alcubilla González, Ramón (WIP Renewable Energies, 2016)
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      Reducing the wafer thickness for c-Si solar cell fabrication is an effective approach for cost-savings. Interdigitated Back Contacts (IBC) technology is a promising candidate to be applied to thin c-Si substrates due to ...

    • Thin-film transistors with polymorphous silicon active layer 

      Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Orpella García, Alberto; Alcubilla González, Ramón; Fontcuberta Morral, Anna; Tripathi, V; Roca, P (2002-04)
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      Accés restringit per política de l'editorial
      Hydrogenated silicon thin films were obtained by plasma enhanced chemical vapour deposition under plasma conditions close to the formation of powder. By that means microcrystalline, polymorphous and amorphous silicon layers ...

    • Three-dimensional metallo-dielectric selective thermal emitters with high-temperature stability for thermophotovoltaic applications 

      Garin Escriva, Moises; Hernández García, David; Todorov Trifonov, Trifon; Alcubilla González, Ramón (2015-03-01)
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      Accés obert
      Selective thermal emitters concentrate most of their spontaneous emission in a spectral band much narrower than a blackbody. When used in a thermophovoltaic energy conversion system, they become key elements defining both ...

    • Transition metal oxides as hole-selective contacts in silicon heterojunctions solar cells 

      Gerling Sarabia, Luis Guillermo; Mahato, Somnath; Morales-Vilches, Ana Belén; Masmitjà Rusiñol, Gerard; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Puigdollers i González, Joaquim (2016-02-02)
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      This work reports on a comparative study comprising three transition metal oxides, MoO3, WO3 and V2O5, acting as front p-type contacts for n-type crystalline silicon heterojunction solar cells. Owing to their high work ...

    • Transport mechanisms in silicon heterojunction solar cells with molybdenum oxide as a hole transport layer 

      García Hernansanz, Rodrigo; Garcia Hemme, E.; Montero, D.; Olea Ariza, Javier; Prado Millán, Álvaro del; Martil, Ignacio; Voz Sánchez, Cristóbal; Gerling Sarabia, Luis Guillermo; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2018-10-01)
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      Accés obert
      Heterojunction solar cells based on molybdenum sub-oxide (MoOx) deposited on n-type crystalline silicon have been fabricated. The hole selective character of MoOx is explained by its high workfunction, which causes a strong ...

    • Tuning the emissivity of 3D macroporous silicon in the mid-infrared 

      Hernández Díaz, David; Vega Bru, Didac; Garin Escriva, Moises; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón (2010)
      Text en actes de congrés
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      Tailoring the thermal emission of a particular material by using periodic micro-structures has attracted great interest for its potential applications in heating and lighting systems or thermophotovoltaics. […] Metallic ...

    • Tuning the shape of macroporous silicon 

      Todorov Trifonov, Trifon; Garin Escriva, Moises; Rodríguez Martínez, Ángel; Marsal, L F; Alcubilla González, Ramón (2007-10)
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      Accés restringit per política de l'editorial
      Macroporous silicon membranes, prepared by photo-electrochemical etching, were subjected to pore widening performed by multiple oxidation/oxide-stripping cycles. We study the dependence of pore cross section and diameter ...

    • V2Ox-based hole-selective contacts for c-Si interdigitated back-contacted solar cells 

      Masmitjà Rusiñol, Gerard; Gerling Sarabia, Luis Guillermo; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Martín García, Isidro; Voz Sánchez, Cristóbal; Alcubilla González, Ramón (Royal Society of Chemistry, 2017-04-06)
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      Accés obert
      Over the last few years, transition metal oxide layers have been proposed as selective contacts both for electrons and holes and successfully applied to silicon solar cells. However, better published results need the use ...

    • V2Ox-based hole-selective contacts for c-Si interdigitated back-contacted solar cells 

      Masmitjà Rusiñol, Gerard; Gerling Sarabia, Luis Guillermo; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Martín García, Isidro; Voz Sánchez, Cristóbal; Alcubilla González, Ramón (Royal Society of Chemistry, 2017-05-21)
      Article
      Accés obert
      Over the last few years, transition metal oxide layers have been proposed as selective contacts both for electrons and holes and successfully applied to silicon solar cells. However, better published results need the use ...

    • Very low surface recombination velocity of crystalline silicon passivated by phosphorus-doped a-SiCxNy:H(n) alloys 

      Ferre, R; Orpella García, Alberto; Muñoz Cervantes, Delfina; Martín García, Isidro; Recart, F; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Cabarrocas, Roca I P; Alcubilla González, Ramón (2008-03)
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      Accés restringit per política de l'editorial
      Hydrogenated and phosphorus-doped amorphous silicon carbonitride films (a-SiCxNy:H(n)) were deposited by plasma-enhanced chemical vapor deposition (PECVD) on crystalline silicon surface in order to explore surface passivation ...

    • Visible light emission from macroporous Si 

      Cheylan, Stephanie; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Marsal Garví, Lluís Francesc; Pallarès Marzal, Josep; Alcubilla González, Ramón; Badenes, Gonçal (2006-10)
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      Accés restringit per política de l'editorial
      Macroporous silicon structures have been fabricated by electrochemical etching. Such fabrication process is known to result in the presence of a thin microporous Si layer at the walls of the macropores and at the surface. ...