Exploració per autor "Asensi López, José Miguel"

Ara es mostren els items 1-12 de 12

    • Analysis of the dynamic short-circuit resistance in organic bulk-heterojunction solar cells: relation to the charge carrier collection efficiency 

      Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Asensi López, José Miguel; Galindo Lorente, Sergi; Cheylan, S.; Pacios, R.; Ortega Villasclaras, Pablo Rafael; Alcubilla González, Ramón (2013-06)
      Article
      Accés restringit per política de l'editorial
      This work studies the charge carrier collection efficiency in organic bulk-heterojunction solar cells based on polymer:fullerene blends. An equivalent circuit with a specific recombination term is proposed to describe the ...

    • 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 obert
      Development 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 ...

    • Deposition and characterisation of sputtered molybdenum oxide thin films with hydrogen atmosphere 

      López-Pintó, Nicolau; Tom, Thomas; Bertomeu Bo, Joan; Asensi López, José Miguel; Ros Costals, Eloi; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal (2021-10)
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      Accés obert
      Sputtered films of reduced molybdenum oxide (MoOx) with a molybdenum trioxide target in different pressures and atmospheres were deposited in varying temperatures. Compositional, optic, and electric characteristics of the ...

    • 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 obert
      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 ...

    • Expanding the perspective of polymeric selective contacts in photovoltaic devices using branched polyethylenimine 

      Ros Costals, Eloi; Tom, Thomas; Rovira Ferrer, David; Lopez Vidrier, Julià; Masmitjà Rusiñol, Gerard; Pusay Villarroel, Benjamín Andrés; Almache Hernández, Rosa Estefanía; Martín García, Isidro; Jiménez Guerra, Maykel; Saucedo Silva, Edgardo Ademar; Tormos, Eva; Asensi López, José Miguel; Ortega Villasclaras, Pablo Rafael; Bertomeu Balagueró, Joan; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal (American Chemical Society (ACS), 2022-09-05)
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      Accés obert
      This work studies the use of polymeric layers of polyethylenimine (PEI) as an interface modification of electron-selective contacts. A clearly enhanced electrical transport with lower contact resistance and significant ...

    • Influence of a gold seed in transparent V2Ox/Ag/V2Ox selective contacts for dopant-free silicon solar cells 

      Nguyen, Hieu Trung; Ros Costals, Eloi; Bertomeu Balaguero, Joan; Asensi López, José Miguel; Andreu Batallé, Jordi; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; Garin Escriva, Moises; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Tom, Thomas (2018-11-05)
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      Accés obert
      Dielectric/metal/dielectric structures based on vanadium pentoxide with a thin silver interlayer have been optimized to replace traditional transparent electrodes. As would be expected, there is a tradeoff in the metal ...

    • Influence of co-sputtered Ag:Al ultra-thin layers in transparent V2O5/Ag:Al/AZO hole-selective electrodes for silicon solar cells 

      Tom, Thomas; Ros Costals, Eloi; Asensi López, José Miguel; Andreu Batallé, Jordi; Bertomeu Balagueró, Joan; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; López-Pintó, Nicolau (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-31)
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      Accés obert
      As optoelectronic devices continue to improve, control over film thickness has become crucial, especially in applications that require ultra-thin films. A variety of undesired effects may arise depending on the specific ...

    • 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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      Accés obert
      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 ...

    • Main properties of Al2O3 thin films deposited by magnetron sputtering of an Al2O3 ceramic target at different radio-frequency power and argon pressure and their passivation effect on p-type c-Si wafers 

      García Valenzuela, J. A.; Rivera, R.; Morales Vilches, Ana Belén; Gerling Sarabia, Luis Guillermo; Caballero Lorenzo, Álvaro; Asensi López, José Miguel; Voz Sánchez, Cristóbal; Bertomeu Balagueró, Joan; Andreu Batallé, Jordi (2016-11-30)
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      Accés obert
      In this work, 50-nm thick Al2O3 thin films were deposited at room temperature by magnetron sputtering from an Al2O3 ceramic target at different RF power and argon pressure values. The sputtering technique could be preferred ...

    • Poly(amidoamine) dendrimer as an interfacial dipole modification in crystalline silicon solar cells 

      Tom, Thomas; Ros Costals, Eloi; Lopez Vidrier, Julià; Asensi López, José Miguel; Ortega Villasclaras, Pablo Rafael; Puigdollers i González, Joaquim; Bertomeu Balagueró, Joan; Voz Sánchez, Cristóbal (American Chemical Society (ACS), 2023-05-03)
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      Accés obert
      Poly(amidoamine) (PAMAM) dendrimers are used to modify the interface of metal-semiconductor junctions. The large number of protonated amines contributes to the formation of a dipole layer, which finally serves to form ...

    • Polymeric interlayer in CdS-Free electron-selective contact for Sb2Se3 thin-film solar cells 

      Rovira Ferrer, David; Ros Costals, Eloi; Tom, Thomas; Jiménez Guerra, Maykel; Asensi López, José Miguel; Voz Sánchez, Cristóbal; Lopez Vidrier, Julià; Puigdollers i González, Joaquim; Bertomeu Balagueró, Joan; Saucedo Silva, Edgardo Ademar (2023-02-04)
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      Accés obert
      High open-circuit voltage in Sb2Se3 thin-film solar cells is a key challenge in the development of earth-abundant photovoltaic devices. CdS selective layers have been used as the standard electron contact in this technology. ...

    • Ultrathin a-Si:H/Oxide transparent solar cells exhibiting UV-Blue selective-like absorption 

      Lopez-Garcia, Alex J.; Voz Sánchez, Cristóbal; Asensi López, José Miguel; Puigdollers i González, Joaquim; Izquierdo Roca, Víctor; Perez Rodriguez, Alejandro (John Wiley & sons, 2023-02-15)
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      Accés obert
      Herein, the fabrication of transparent solar cells based on nanometric (8 and30 nm) intrinsic hydrogenated amorphous siliconfilms (a-Si:H) and using oxidethinfilms as transparent carrier selective contacts are reported. ...