Browsing by Author "Perez Rodriguez, Alejandro"

Now showing items 1-10 of 10

    • 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)
      Article
      Open Access
      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 ...

    • 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 ...

    • 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)
      Article
      Open Access
      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 ...

    • 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)
      Article
      Open Access
      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 ...

    • Impact of Cu-Au type domains in high current density CuInS2 solar cells 

      Moreau, Antonin; Insignares Cuello, Cristina; Escoubas, Ludovic; Simon, Jean-Jacques; Bermudez, Veronica; Perez Rodriguez, Alejandro; Izquierdo Roca, Víctor; Ruiz, Carmen M. (2015-08-01)
      Article
      Restricted access - publisher's policy
      In this work, a series of stain steel 15×15 cm2 CuInS2 solar cells with efficiencies close to the record one for this kind of devices, are analyzed. Through a careful and comprehensive study of the structural and electronic ...

    • 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)
      Article
      Open Access
      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, ...

    • 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 ...

    • Stability of Cu2ZnSnSe4/CdS heterojunction based solar cells under soft post-deposition thermal treatments 

      Atlan, Fabien; Becerril Romero, Ignacio; Giraldo Muñoz, Sergio; Rotaru, Victoria; Sánchez, Yudania; Gurieva, Galina; Schorr, Susan; Arushanov, Ernest; Perez Rodriguez, Alejandro; Izquierdo Roca, Víctor; Guc, Maxim (2023-01-01)
      Article
      Restricted access - publisher's policy
      The thermal stability of the Cu2ZnSnSe4 (CZTSe) absorber and CdS buffer layers in SLG/Mo/CZTSe/CdS/i-ZnO/ITO devices is explored by performing a series of soft (~200 °C) post deposition treatments (PDTs). A comprehensive ...

    • 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)
      Article
      Open Access
      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. ...

    • Ultrathin wide-bandgap a-Si:H-based solar cells for transparent photovoltaic applications 

      Lopez-Garcia, Alex J.; Blazquez, Oriol; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Izquierdo Roca, Víctor; Perez Rodriguez, Alejandro (Wiley, 2022-01-01)
      Article
      Open Access
      Herein, the fabrication of UV-blue selective transparent solar cells based on ultrathin (<30¿nm) intrinsic hydrogenated amorphous silicon films (a-Si:H) as absorber and using a fully inorganic architecture is reported, ...