Exploració per autor "Puigdollers i González, Joaquim"
Ara es mostren els items 13-32 de 147
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Células fotovoltaicas con un rendimiento del 20.5%
Alcubilla González, Ramón; García Molina, Francisco Miguel; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Orpella García, Alberto; Martín García, Isidro; Colina, M.; Voz Sánchez, Cristóbal; Bermejo Broto, Sandra; Puigdollers i González, Joaquim (Grupo Acorde Comunicación (GAC), 2011-03-01)
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Accés restringit per política de l'editorialUn grupo de investigadores de la Universitat Politècnica de Catalunya (UPC) han desarrollado un proceso de fabricación que permite obtener rendimientos de conversión fotovoltaicos del 20,5%. Esto supone una mejora sustancial ... -
Challenges and improvement pathways to develop quasi-1D (Sb1-xBix)2Se3-based materials for optically tuneable photovoltaic applications. Towards chalcogenide narrow-bandgap devices
Caño Prades, Ivan; Vidal Fuentes, Pedro; Gon Medaille, Axel; Jehl, Zacharie Victor Samuel Na; Jiménez Arguijo, Alex; Guc, Maxim; Izquierdo Roca, Víctor; Malerba, Claudia; Valentini, Matteo; Jiménez Guerra, Maykel; Placidi, Marcel Jose; Puigdollers i González, Joaquim; Saucedo Silva, Edgardo Ademar (2023-03-01)
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Accés obertQuasi-1D chalcogenides have shown great promises in the development of emerging photovoltaic technologies. However, most quasi-1D semiconductors other than Sb2Se3 and Sb2S3 have been seldom investigated for energy generation ... -
Characterization and application of a-SiCx:H films for the passivation of the c-Si surface
Martín Campos, Ignacio Clemente; Vetter, M; Orpella García, Alberto; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Marsal, L F; Pallarès Marzal, Josep; Alcubilla González, Ramón (2002-01)
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Accés restringit per política de l'editorialIn this work we investigate the effects of typical thermal treatments on c-Si surface passivation by intrinsic a-SiCx:H films. First, a forming gas anneal (FGA), (400 °C, 30 min in H2/N2) is applied resulting in an improvement ... -
Characterization and modeling of organic thin-film transistors based pi-conjugated small molecule tetraphenyldibenzoperiflanthene: effects of channel length
Boukhili, W.; Mahdouani, M.; Bourguiga, R.; Puigdollers i González, Joaquim (2016-07-01)
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Accés obertP-type organic thin film transistors (OTFTs) with different channel lengths have been fabricated and characterized by thermal evaporation using the small tetraphenyldibenzoperiflanthene (DBP) as an active material on Si/SiO2 ... -
Characterization of bifacial heterojunction Silicon solar cells obtained by Hot-Wire CVD
Muñoz Cervantes, Delfina; Voz Sánchez, Cristóbal; Fonrodona, Marta; Garin Escriva, Moises; Orpella García, Alberto; Vetter, Michael; Puigdollers i González, Joaquim; Alcubilla González, Ramón; Villar, F; Bertoeu, J; Andreu Batallé, Jordi (2006-07)
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Accés restringit per política de l'editorialIn this work, we study bifacial heterojunction silicon solar cells fabricated by hot-wire CVD on both p- and n-type crystalline silicon substrates. In these devices, hydrogenated microcrystalline silicon doped layers are ... -
Characterization of transition metal Oxide/Silicon heterojunctions for solar cell applications
Gerling Sarabia, Luis Guillermo; Mahato, Somnath; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Puigdollers i González, Joaquim (2015-10-09)
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Accés obertDuring the last decade, transition metal oxides have been actively investigated as hole- and electron-selective materials in organic electronics due to their low-cost processing. In this study, four transition metal oxides ... -
Comparison between the density-of-states of picene transistors measured in air and under vacuum
Voz Sánchez, Cristóbal; Marsal, Albert; Moreno Sierra, César; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2012-01)
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Accés restringit per política de l'editorialPicene has recently attracted much attention as the active layer in organic thin-film transistors because of its good performance in air. In this work, we have fabricated picene thin-film transistors that exhibit field-effect ... -
Comparison of simulation models for Perovskite solar cells
Silvestre Bergés, Santiago; Mas-Marza, Elena; Puigdollers i González, Joaquim; Fabregat-Santiago, Francisco; Alfonso, Valero G (WIP Renewable Energies, 2016)
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Accés restringit per política de l'editorialIn this work, a comparison of two models for the simulation of the electrical behavior of perovskite solar cells is presented. The two models considered are the well-known one diode model and an analytical model recently ... -
Compositional influence on the electrical performance of zinc indium tin oxide transparent thin-film transistors
Marsal Vinade, Albert; Carreras Seguí, Paz; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Galindo Lorente, Sergi; Alcubilla González, Ramón; Bertomeu Balaguero, Joan; Antony, Aldrin (2014-03-31)
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Accés restringit per política de l'editorialIn this work, zinc indium tin oxide layers with different compositions are used as the active layer of thin film transistors. This multicomponent transparent conductive oxide is gaining great interest due to its reduced ... -
Confronting positions: para-vs. meta-functionalization in triindole for p-type air-stable OTFTs
Cuadrado Santolaria, Alba; Bujaldón Carbó, Roger; Fabregat Pallejà, Clara; Puigdollers i González, Joaquim; Velasco Castrillo, Maria Dolores (2024-05)
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Accés obertThe 5,10,15-trihexyl-10,15-dihydro-5H-diindolo[3,2-a:3',2'-c]carbazole core, namely triindole, is well-known for its prominent hole-transporting properties and air stability. The functionalization of this core is also ... -
Copper phthalocyanine thin filma transistors with polymeric gate dielectric
Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Fonrodona, Marta; Cheylan, Stephanie; Stella, M; Andreu Batallé, Jordi; Vetter, Michael; Alcubilla González, Ramón (2006-06)
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Accés restringit per política de l'editorialCopper phthalocyanine (CuPc) thin-film transistors have been fabricated using polymethyl methacrylate (PMMA) as gate dielectric. A bottom gate, staggered structure was selected to study the device performance. CuPc thin-films ... -
Crystalline silicon solar cells beyond 20% efficiency
Alcubilla González, Ramón; García Molina, Francisco Miguel; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Orpella García, Alberto; Martín García, Isidro; Colina, M.; Voz Sánchez, Cristóbal; Bermejo Broto, Sandra; Puigdollers i González, Joaquim (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
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Accés obert—This paper describes a fabrication process to obtain high efficiency c-Si cells (> 20%) based on the Laser Fired Contact Passivated Emitter Rear Cell (LFC-PERC) concept. Photovoltaic efficiencies beyond 20% have ... -
Crystalline Silicon surface passivation with amorphous SiCx:H films deposited by Plasma- Enhanced Chemical Vapor Deposition
Martín García, Isidro; Vetter, Michael; Garin Escriva, Moises; Orpella García, Alberto; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Alcubilla González, Ramón (American Institute of Physics (AIP), 2005-12)
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Accés restringit per política de l'editorialSurface-passivating properties of hydrogenated amorphous silicon carbide films(a-SiCx:H)(a-SiCx:H)deposited by plasma-enhanced chemical-vapor deposition on both pp- and nn-type crystalline silicon(c-Si)(c-Si) have been ... -
Defect states assisted charge conduction in Au/MoO3¿x/n-Si Schottky barrier diode
Mahato, Somnath; Voz Sánchez, Cristóbal; Biswas, Debaleen; Puigdollers i González, Joaquim; Bhunia, Satyaban (Institute of Physics (IOP), 2018-12-07)
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Accés obertRole of defect states of thermally evaporated molybdenum trioxide (MoO3-x) on electrical conductivity was investigated via low temperature current–voltage and capacitance–voltage measurements. To clarify the charge transport ... -
Degradation study and calculation of density-of-states in PTCDI-C8 channel layer from the electrical characteristics of thin-film transistors
Shijeesh, Methattel R.; Vikas, L. S.; Jayaraj, M. K.; Puigdollers i González, Joaquim (American Institute of Physics (AIP), 2014-07-14)
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Accés restringit per política de l'editorialN-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. ... -
Density-of-states in pentacene from the electrical characteristics of thin-film transistors
Puigdollers i González, Joaquim; Marsal Vinade, Albert; Cheylan, Stephaie; Voz Sánchez, Cristóbal; Alcubilla González, Ramón (2010-08)
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Accés restringit per política de l'editorialIn this work the density-of-states in the gap of pentacene is calculated from the electrical characteristics of thin-film transistors measured at different temperatures. The density-of-states after a thermal annealing in ... -
Deoxyribonucleic acid-based electron selective contact for crystalline silicon solar cells
Tom, Thomas; Ros Costals, Eloi; Rovira, David; Lopez Vidrier, Julià; Asensi López, José Miguel; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Bertomeu Balagueró, Joan (Wiley, 2023-02-10)
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Accés obertDevelopment of carrier selective contacts for crystalline silicon solar cells has been recently of great interest toward the further expansion of silicon photovoltaics. The use of new electron and hole selective layers has ... -
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)
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Accés obertSb2Se3 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 ... -
Effect of buffer layer on minority carrier lifetime and series resistance of bifacial heterojunction silicon solar cells analyzed by impedance spectroscopy
Garcia Belmonte, G; García Cañadas, J; Mora-Seró, I; Bisquert, J; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2006-07)
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Accés restringit per política de l'editorialBy combining information on solar cell layer structure and electrical response analyzed by impedance spectroscopy, relevant knowledge is obtained about photogenerated carriers recombination and extraction. The inclusion ... -
Effect of permanent dipole layers in the electrical characteristics of electronic devices and solar cells
Ros Costals, Eloi; Pusay Villarroel, Benjamín Andrés; Almache Hernández, Rosa Estefanía; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim (2019)
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