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Ara es mostren els items 1-20 de 21

    • 2-step process for 5.4% CuGaSe2 solar cell using fluorine doped tin oxide transparent back contacts 

      Thomere, Angélica; Placidi, Marcel Jose; Guc, Maxim; Tiwari, Kunal Jogendra; Fonoll Rubio, Robert; Izquierdo Roca, Víctor; Perez Rodriguez, Alejandro; Jehl Li-Kao, Zacharie (2023)
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      As single-junction solar cells are approaching theoretical limits, multijunction solar cells are becoming increasingly relevant, and low-cost wider bandgap light harvesters in tandem with silicon are the next frontier in ...

    • A new approach for alkali incorporation in Cu2ZnSnS4 solar cells 

      Valdés, Matías; Sánchez González, Yudania; Fonoll Rubio, Robert; Placidi, Marcel Jose; Izquierdo Roca, Víctor; Cabas Vidani, Antonio; Mittiga, Alberto; Pistor, Paul; Malerba, Claudia; Saucedo Silva, Edgardo Ademar (2022-10-01)
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      The addition of alkali elements has become mandatory for boosting solar cell performance in chalcogenide thin films based on kesterites (Cu2ZnSnS4, CZTS). A novel doping process is presented here, that consists in the ...

    • Bromine etching of kesterite thin films: perspectives in depth defect profiling and device performance improvement 

      Tiwari, Kunal Jogendra; Jiménez Arguijo, Alex; Giraldo, Sergio; Placidi, Marcel Jose; Calvo-Barrio, L; Fonoll Rubio, Robert; Izquierdo Roca, Víctor; Sánchez González, Yudania; Perez Rodriguez, Alejandro; Saucedo Silva, Edgardo Ademar; Jehl Li-Kao, Zacharie (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Using a controlled bromine etching on kesterite absorbers, two major results are obtained. We establish the first defect depth profiling and secondary phases depth profiling of a state of the art Cu2ZnSnSe4 (CZTSe) film ...

    • 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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      Quasi-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 of the stability of indium tin oxide and functional layers for semitransparent back-contact applications on Cu(in,Ga)Se2 solar cells 

      Fonoll Rubio, Robert; Placidi, Marcel Jose; Hoelscher, Torsten; Thomere, Angélica; Jehl Li-Kao, Zacharie; Guc, Maxim; Izquierdo Roca, Víctor; Scheer, Roland; Perez Rodriguez, Alejandro (Wiley, 2022-07-08)
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      Herein, a detailed study of the stability of different ITO-based back-contact configurations (including bare ITO contacts and contacts functionalized with nanometric Mo, MoSe2, and MoS2 layers) under the coevaporation ...

    • Controlling the anionic ratio and gradient in kesterite technology 

      Andrade Arvizu, Jacob; Fonoll Rubio, Robert; Izquierdo Roca, Víctor; Becerril Romero, Ignacio; Sylla, Dioulde Huguette; Vidal Fuentes, Pedro; Jehl Li-Kao, Zacharie; Thomere, Angélica; Giraldo, Sergio; Tiwari, Kunal Jogendra; Resalati, Shahaboddin; Guc, Maxim; Placidi, Marcel Jose (2022-01-03)
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      Accurate anionic control during the formation of chalcogenide solid solutions is fundamental for tuning the physicochemical properties of this class of materials. Compositional grading is the key aspect of band gap engineering ...

    • Defect depth-profiling in kesterite absorber by means of chemical etching and surface analysis 

      Giraldo, Sergio; Calvo-Barrio, L; Placidi, Marcel Jose; Sánchez González, Yudania; Saucedo Silva, Edgardo Ademar; Jehl, Zacharie Victor Samuel Na (2021-02-28)
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      A method to probe the depth morphology, defect profile and possible secondary phases in a thin film semiconductor is presented, taking a standard Kesterite film as an example. Using a top-down approach based on a previously ...

    • 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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      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 ...

    • Effects of ITO based back contacts on Cu(In,Ga)Se2 thin films, solar cells, and mini-modules relevant for semi-transparent building integrated photovoltaics 

      Hölscher, Torsten; Placidi, Marcel Jose; Becerril Romero, Ignacio; Fonoll Rubio, Robert; Izquierdo Roca, Víctor; Thomere, Angélica; Bailo Bobi, Eduard; Schneider, Thomas; Kempa, Heiko; Scheer, Roland; Perez Rodriguez, Alejandro (2023-03-01)
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      This study presents the results of the development of semi-transparent Cu(In,Ga)Se2 (CIGSe) mini-modules for the application in building integrated photovoltaics (BIPV). Applying in-situ X-ray diffraction in real-time ...

    • Electron beam lithography for direct patterning of MoS2on PDMS substrates 

      Jumbert, Gil; Placidi, Marcel Jose; Alzina, F.; Sotomayor Torres, Clivia M.; Sledzinska, Marianna (Royal Society of Chemistry (RSC), 2021-06-09)
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      Precise patterning of 2D materials into micro- and nanostructures presents a considerable challenge and many efforts are dedicated to the development of processes alternative to the standard lithography. In this work we ...

    • Feasibility of a full chalcopyrite tandem solar cell: a quantitative numerical approach 

      Tiwari, Kunal Jogendra; Giraldo, Sergio; Placidi, Marcel Jose; Gon Medaille, Axel; Saucedo Silva, Edgardo Ademar; Jehl Li-Kao, Zacharie (Wiley, 2021-07-08)
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      The potential of tandem solar cells combining two chalcopyrite absorbers is evaluated using numerical modeling based on an exhaustive set of experimental parameters, offering a high degree of confidence in the numerical ...

    • Impact of atomic layer deposition temperature on electrical and optical properties of ZnO:Al films 

      Masmitjà Rusiñol, Gerard; Estarlich Gil, Pau; López Rodríguez, Gema; Martín García, Isidro; Voz Sánchez, Cristóbal; Placidi, Marcel Jose; Torrens Dinarès, Arnau; Saucedo Silva, Edgardo Ademar; Vasquez, Pia; Muñoz, Delfina; Puigdollers i González, Joaquim; Ortega Villasclaras, Pablo Rafael (Elsevier, 2024-03-01)
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      This work highlights the impact of growth temperature on electrical and optical properties of Al-doped ZnO (AZO) films deposited by atomic layer deposition (ALD) technique. The ALD process and super-cycle sequence have ...

    • Kinetics and phase analysis of kesterite compounds: Influence of chalcogen availability in the reaction pathway 

      Hernández Martínez, Alejandro; Giraldo, Sergio; Alcobe, Xavier; Becerril Romero, Ignacio; Placidi, Marcel Jose; Izquierdo Roca, Víctor; Pistor, Paul; Perez Rodriguez, Alejandro; Saucedo Silva, Edgardo Ademar; Valdés, Matías (2022-08-01)
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      Accés restringit per política de l'editorial
      Physical vapor deposition methodologies have gained a lot of interest in the synthesis of kesterites, including sequential processes based on sputtering of metals followed by reactive annealing. Bearing this in mind, ...

    • Life cycle assessment of different chalcogenide thin-film solar cells 

      Resalati, Shahaboddin; Okoroafor, Tobechi; Maalouf, Amani; Saucedo Silva, Edgardo Ademar; Placidi, Marcel Jose (2022-05-01)
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      Thin-film photovoltaics (PV) cells offer several benefits over conventional first-generation PV technologies, including lighter weight, flexibility, and lower power generation cost. Among the competing thin-film technologies, ...

    • Numerical investigation of interface passivation strategies for Sb2Se3/CdS solar cells 

      Gon Medaille, Axel; Tiwari, Kunal Jogendra; Giraldo, Sergio; Placidi, Marcel Jose; Saucedo Silva, Edgardo Ademar; Jehl Li-Kao, Zacharie (Wiley, 2021-11-24)
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      Sb2Se3 is an emerging earth-abundant material praised for its promising optoelectronic properties, although the presence of interfacial defects at the vicinity of the p–n junction limit its performance as photovoltaic ...

    • Over 10% efficient wide bandgap CIGSe solar cells on transparent substrate with Na predeposition treatment 

      Placidi, Marcel Jose; Saucedo Silva, Edgardo Ademar; Jehl, Zacharie Victor Samuel Na (Wiley, 2020-09-11)
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      With the recent rise of new photovoltaic applications, it has become necessary to develop specific optoelectronic properties for thin-film technologies such as Cu(In,Ga)Se2 and to take advantage of their high degree of ...

    • Progress and perspectives of thin film kesterite photovoltaic technology: a critical review 

      Giraldo, Sergio; Jehl Li-Kao, Zacharie; Placidi, Marcel Jose; Saucedo Silva, Edgardo Ademar (2019-02-14)
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      The latest progress and future perspectives of thin film photovoltaic kesterite technology are reviewed herein. Kesterite is currently the most promising emerging fully inorganic thin film photovoltaic technology based on ...

    • SbSeI and SbSeBr micro-columnar solar cells by a novel high pressure-based synthesis process 

      Caño Prades, Ivan; Navarro Güell, Alejandro; Maggi, Edoardo; Barrio Casado, María del; Tamarit Mur, José Luis; Svatek, Simon Aurel; Antolin, Elisa; Yan, Shunya; Barrena Villas, Esther; Galiana Blanco, Beatriz; Placidi, Marcel Jose; Puigdollers i González, Joaquim; Saucedo Silva, Edgardo Ademar (Royal Society of Chemistry (RSC), 2023-07-17)
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      Van der Waals chalcogenides and chalcohalides have the potential to become the next thin film PV breakthrough, owing to the earth-abundancy and non-toxicity of their components, and their stability, high absorption coefficient ...

    • Semitransparent wide bandgap Cu2ZnGe(S,Se)4 thin-film solar cells: Role of the sulfurization process 

      Ruiz Perona, Andrea; Palma Lafuente, David; Sánchez González, Yudania; Guc, Maxim; Kodalle, Tim; Salem, Mohamed; Placidi, Marcel Jose; Serna Galán, Rosalía; Perez Rodriguez, Alejandro; Merino Álvarez, José Manuel; Caballero Mesa, Raquel (John Wiley & sons, 2023-12-27)
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      Semitransparent solar cells are very attractive due to the increasing integration in daily life. Kesterite-type based thin-film solar cells stand out because of its environmentally benign composition and outstanding ...

    • The effect of annealing temperature on Cu2ZnGeSe4 thin films and solar cells grown on transparent substrates 

      Ruiz Perona, Andrea; Sánchez González, Yudania; Guc, Maxim; Kodalle, Tim; Placidi, Marcel Jose; Merino Álvarez, José Manuel; Cabello, Fátima; García Pardo, Marina; León Macarrón, Máximo; Caballero Mesa, Raquel (2021-07-01)
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      Semi-transparent solar cells are the next step for photovoltaics into our daily life. Over the last years, kesterite-type material has attracted a special attention to be used as an absorber in thin-film solar cells because ...