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Ara es mostren els items 79-98 de 147

    • KCN chemical etching of van der Waals Sb2Se3 thin films synthesized at low temperature leads to inverted surface polarity and improved solar cell efficiency 

      Jiménez Guerra, Maykel; Calvo Barrio, Lorenzo; Asensi López, José Miguel; Caño Prades, Ivan; Yan, Shunya; Barrena Villas, Esther; Puigdollers i González, Joaquim; Jehl, Zacharie Victor Samuel Na; Sánchez González, Yudania; Saucedo Silva, Edgardo Ademar (American Chemical Society (ACS), 2024-01-22)
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      Recent developments in Sb2Se3 van der Waals material as an absorber candidate for thin film photovoltaic applications have demonstrated the importance of surface management for improving the conversion efficiency of this ...

    • Large Stokes shift downshifting Eu(III) films as efficiency enhancing UV blocking layers for dye sensitized solar cells 

      Kennedy, M.; Ahmed, H.; Doran, J.; Norton, B.; Daren, S.; Galindo Lorente, Sergi; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim (2015-01-01)
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      Large Stokes shift downshifting organolanthanide complex, Eu(tta)(3)phen, is examined for inclusion in polymeric layers to replace the UV blocking layer in dye sensitized solar cell (DSSC) technology. The UV blocking layer ...

    • Laser fired contacts on amorphous silicon deposited by hot-wire cvd on crystalline silicon 

      Blanque, S; Voz Sánchez, Cristóbal; Muñoz Cervantes, Delfina; Martín García, Isidro; Orpella García, Alberto; Puigdollers i González, Joaquim; Alcubilla González, Ramón (WIP Wirtschaft und Infrastruktur GmbH & Co. Planungs-KG, 2008)
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      In this work we study aluminium laser-fired contacts for intrinsic amorphous silicon layers deposited by Hot-Wire CVD. This structure could be used as an alternative low temperature back contact for rear passivated ...

    • Low-cost high-sensitive suns-Voc measurement instrument to characterize c-Si solar cells 

      Ortega Villasclaras, Pablo Rafael; Piñol, Juan M.; Martín García, Isidro; Orpella García, Alberto; Masmitjà Rusiñol, Gerard; López Rodríguez, Gema; Ros Costals, Eloi; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2020-09-01)
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      Measuring open-circuit voltage (Voc) vs. light intensity (Suns) in solar cells permits the access of cell performance without the series resistance effect. This work shows the implementation of a Suns-Voc measurement system ...

    • Lumogen violet dye as luminiscent down-shifting layer for C-silicon solar cells 

      Ahmed, H.; Kennedy, M.; Confrey, T.; Doran, J.; McCormack, S.J.; Galindo Lorente, Sergi; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim (2012)
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      In this investigation Naphtalimide based Lumogen Violet organic dye [BASF] is characterized for inclusion in luminescent downshifting (LDS) layers. A PV device made up of an LDS layer of Lumogen Violet deposited on top ...

    • Microcrystalline silicon thin film transistors obtained by hot-wire CVD 

      Puigdollers i González, Joaquim; Dosev, D; Orpella García, Alberto; Voz Sánchez, Cristóbal; Peiro, D; Bertomeu Balaguero, Joan; Marsal, L F; Pallarés, J; Andreu Batallé, Jordi; Alcubilla González, Ramón (1999-12)
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      Polysilicon thin film transistors (TFT) are of great interest in the field of large area microelectronics, especially because of their application as active elements in flat panel displays. Different deposition techniques ...

    • Mixed-phase composites derived from cobalt terephthalate as efficient battery-type electrodes for high-performance supercapattery 

      Manikandan, Ramu; Savariraj, A. Denninson; Nagaraju, Goli; Kale, A.M.; Puigdollers i González, Joaquim; Park, Hyejin; Kim, Hyun-Soo; Oh, Jae-Min; Raj, C. Justin (2023-09)
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      Interfacial engineering of two-dimensional (2D) monometallic phosphides enables remarkable structural and electrochemical properties in energy storage devices. Herein, 2D nanosheets (NSs) of FeP2/Co2P were grown on Ni-foam ...

    • Model for the charge carrier collection in organic small-molecule solar cells 

      Galindo Lorente, Sergi; Ahmadpour Sayyar, Mehrad; Voz Sánchez, Cristóbal; Asensi, J.M.; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2013)
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    • Molecular order of air-stable p-type organic thin-film transistors by tuning the extension of the pi-conjugated core: the cases of indolo[3,2-b]-carbazole and triindole semiconductors 

      Reig, Marta; Puigdollers i González, Joaquim; Velasco, Dolores (Royal Society of Chemistry, 2015-01-01)
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      Charge transport in organic devices depends strongly on the molecular order and morphology of the organic semiconductor thin films. In the design of new organic semiconductors, the selection of the appropriate core plays ...

    • Multicrystalline silicon thin-film solar cells based on vanadium oxide heterojunction and laser-doped contacts 

      Martín García, Isidro; López Rodríguez, Gema; Plentz, Jonathan; Jin, Chen; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Gawlik, Annet; Jia, Guobin; Andrä, Gudrun (2019-10)
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      Liquid phase crystallized (LPC) silicon thin films on glass substrates are a feasible alternative to conventional crystalline silicon (c-Si) wafers for solar cells. Due to substrate limitation, a low-temperature technology ...

    • N-type emitters passivation through antireflective phosphorus doped a-SiCxNy:H(n) stacks 

      Orpella García, Alberto; Blanqué, Servane; Roiati, V.; Martín García, Isidro; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Alcubilla González, Ramón (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-02-11)
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      This paper studies the passivation of industrially textured deep silicon emitters using amorphous silicon carbonitride layers in stack configuration, deposited by plasma enhanced chemical vapor deposition. With this ...

    • N-type PTCDI¿C13H27 thin-film transistors deposited at different substrate temperature 

      Puigdollers i González, Joaquim; Pirriera, Della M; Marsal Vinade, Albert; Orpella García, Alberto; Cheylan, Stephanie; Voz Sánchez, Cristóbal; Alcubilla González, Ramón (2009-10)
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      Accés restringit per política de l'editorial
      N-type organic thin-film transistors based on N,N'-ditridecylperylene-3,4,9,10-tetracarboxylic diimide have been fabricated by thermal evaporation at different substrate temperatures. The best device was obtained at 120 ...

    • Near 5% DMSO is the best: a structural investigation of PEDOT: PSS thin films with strong emphasis on surface and interface for hybrid solar cell 

      Mahato, Somnath; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Mukhopadhyay, Mala; Mukherjee, Manabendra; Hazra, Satyajit (2019-09-10)
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      Effect of dimethyl sulfoxide (DMSO) doping on poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) thin films have been optimized for obtaining better hole transport layer in hybrid solar cell. The correlation ...

    • Optoelectronic devices based on evaporated pentacene films 

      Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Martín García, Isidro; Muñoz Cervantes, Delfina; Orpella García, Alberto; Vetter, Michael; Alcubilla González, Ramón (2005-01)
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      Aluminium/pentacene Schottky diodes have been fabricated on glass substrates. An ohmic, transparent front contact was prepared by sputtering a highly conductive indium–tin-oxide layer. The pentacene layer was evaporated ...

    • Optoelectronic properties of CuPc thin films deposited at different substrate temperatures 

      Pirriera, Della M; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Stella, M; Bertomeu Balaguero, Joan; Alcubilla González, Ramón (Institute of Physics (IOP), 2009-07)
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      Structural and optical characterization of copper phthalocyanine thin film thermally deposited at different substrate temperatures was the aim of this work. The morphology of the films shows strong dependence on temperature, ...

    • Origin of passivation in hole-selective transition metal oxides for crystalline silicon heterojunction solar cells 

      Gerling Sarabia, Luis Guillermo; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Puigdollers i González, Joaquim (2017-01-23)
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      Transition metal oxides (TMOs) have recently demonstrated to be a good alternative to boron/phosphorous doped layers in crystalline silicon heterojunction solar cells. In this work, the interface between n-type c-Si (n-Si) ...

    • Origin of the negative differential resistance in the output characteristics of a picene-based thin-film transistor 

      Ros Costals, Eloi; Puigdollers i González, Joaquim; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-09)
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      In this work, we have fabricated and studied p-type picene thin-film transistors. Although the devices exhibited good electrical performance with high field-effect mobility (up to 1.3 cm 2 /V·s) and on/off ratios above 10 ...

    • Origin of the negative differential resistance in the output characteristics of a picene-based thin-film transistor 

      Ros, Eloi; Puigdollers i González, Joaquim; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
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      In this work, we have fabricated and studied p-type picene thin-film transistors. Although the devices exhibited good electrical performance with high field-effect mobility (up to 1.3 cm2/V¿s) and on/off ratios above ...

    • PEDOT:PSS as an alternative hole selective contact for ITO-free hybrid crystalline silicon solar cell 

      Mahato, Somnath; Gerling Sarabia, Luis Guillermo; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Puigdollers i González, Joaquim (2016-05-12)
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      Organic-inorganic hybrid solar cells were fabricated by spin coating of conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as hole selective contact upon textured n-type crystalline ...

    • Pentacene thin-film transistors on polymeric gate dielectric: device fabrication and electrical characterization 

      Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Martín García, Isidro; Orpella García, Alberto; Vetter, Michael; Alcubilla González, Ramón (2004-06)
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      Accés restringit per política de l'editorial
      Pentacene thin-film transistors using polymethyl methacrylate as a gate dielectric have been fabricated. A bottom gate, inverted staggered structure was selected to study the influence of the dielectric on the device ...