Now showing items 1-14 of 14

    • 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)
      Article
      Open Access
      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)
      Conference report
      Restricted access - publisher's policy
      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 ...
    • 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)
      Article
      Open Access
      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)
      Article
      Open Access
      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 ...
    • High efficiency Cu2ZnSnS4 solar cells over FTO substrates and their CZTS/CdS interface passivation via thermal evaporation of Al2O3 

      Ojeda Durán, Esteban; Monfil Leyva, Karim; Andrade Arvizu, Jacob; Becerril Romero, Ignacio; Sánchez González, Yudania; Fonoll Rubio, Robert; Guc, Maxim; Jehl Li-Kao, Zacharie; Luna Lópeza, José A.; Saucedo Silva, Edgardo Ademar (Royal Society of Chemistry (RSC), 2021-04-28)
      Article
      Open Access
      The fabrication of soda lime glass/fluorine-doped tin oxide (SLG/FTO) transparent substrates represents an important advance in the fabrication of tandem solar cells. In addition, possible passivation using Al2O3, which ...
    • Influence of amorphous silicon carbide intermediate layer in the back-contact structure of Cu2ZnSnSe4 solar cells 

      Colina Brito, Mónica Alejandra; Martín García, Isidro; Giraldo, Sergio; Sánchez González, Yudania; Kondrotas, Rokas; Oliva, Florian; Izquierdo Roca, Víctor; Pérez Rodríguez, Alejandro; Coll Valentí, Arnau; Alcubilla González, Ramón; Saucedo Silva, Edgardo Ademar (2016-08-01)
      Article
      Open Access
      Cu2 ZnSn(S1-ySey )4 (CZTS) thin-film solar cells have been qualified as potential competitors of the more established CIGS ones. One of the more important handicaps of CZTS solar cells is the open-circuit voltage deficit. ...
    • Insights on the thermal stability of the Sb2Se3 quasi-1D photovoltaic technology 

      Vidal Fuentes, Pedro; Guc, Maxim; Becerril Romero, Ignacio; Sylla, Dioulde Huguette; Alcobé Olle, Xavier; Sánchez González, Yudania; Pérez Rodríguez, Alejandro; Saucedo Silva, Edgardo Ademar; Izquierdo Roca, Víctor (Wiley, 2021-10-13)
      Article
      Open Access
      This work explores the thermal stability of antimony-based photovoltaic (PV) technologies investigating the effect of low-temperature (50—350¿°C) postdeposition annealings (PDAs) on bare Sb2Se3 absorbers and complete ...
    • Investigation on limiting factors affecting Cu2ZnGeSe4 efficiency: Effect of annealing conditions and surface treatment 

      Sánchez González, Yudania; Andrade Arvizu, Jacob; Becerril Romero, Ignacio; Guc, Maxim; Giraldo, Sergio; Izquierdo Roca, Víctor; Saucedo Silva, Edgardo Ademar (2020-10-01)
      Article
      Open Access
      This work aims to unveil the optimal annealing conditions and surface treatments of CZGeSe absorbers, synthesized using vacuum-based deposition technique, with an eye to optimizing the main parameters allowing better control ...
    • 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)
      Article
      Open Access
      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 ...
    • Partial substitution of the CdS buffer layer with interplay of fullerenes in kesterite solar cells 

      Sánchez González, Yudania; Giraldo, Sergio; Saucedo Silva, Edgardo Ademar; Ahmad, Shahid (Royal Society of Chemistry (RSC), 2020-07-27)
      Article
      Open Access
      ver the last few decades, significant progress has been made with inorganic materials to enable them as next generation photovoltaic materials that can fulfil the demands of green energy. Cu2ZnSn(S,Se)4stands out as a ...
    • 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)
      Article
      Open Access
      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 ...
    • Small atom doping: a synergistic strategy to reduce SnZn recombination center concentration in Cu2ZnSnSe4 

      Jiménez Arguijo, Alex; Navarro Güell, Alejandro; Sánchez González, Yudania; Malerba, Claudia; Giraldo Muñoz, Sergio; Saucedo Silva, Edgardo Ademar (Wiley, 2022-11-07)
      Article
      Open Access
      Kesterite Cu2ZnSnS x Se4-x (CZTSSe) is among the most promising inorganic Earth-abundant thin-film photovoltaic technologies, although currently, the larger voltage deficit compared with more mature chalcogenide technologies ...
    • 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)
      Article
      Open Access
      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 ...
    • Transition metal oxides for kesterite solar cells developed on transparent substrates 

      Becerril Romero, Ignacio; Sylla, Dioulde; Placidi, Marcel Jose; Sánchez González, Yudania; Andrade Arvizu, Jacob; Izquierdo Roca, Víctor; Guc, Maxim; Pérez Rodríguez, Alejandro; Grini, Sigbjørn; Vines, Lasse; Pusay Villarroel, Benjamín Andrés; Almache Hernández, Rosa Estefanía; Puigdollers i González, Joaquim; Pistor, Jan Paul; Saucedo Silva, Edgardo Ademar; Espindola Rodríguez, Moisés (2020-07-01)
      Article
      Open Access
      Fabrication on transparent soda-lime glass/fluorine-doped tin oxide (FTO) substrates opens the way to advanced applications for kesterite solar cells such as semitransparent, bifacial, and tandem devices, which are key to ...