Now showing items 1-7 of 7

    • Combinatorial and machine learning approaches for the analysis of Cu2ZnGeSe4: influence of the off-stoichiometry on defect formation and solar cell performance 

      Grau Luque, Enric; Anefnaf, Ikram; Benhaddou, Nada; Fonoll Rubio, Robert; Becerril Romero, Ignacio; Aazou, Safae; Saucedo Silva, Edgardo Ademar; Sekkat, Zouheir; Pérez Rodríguez, Alejandro; Izquierdo Roca, Víctor; Guc, Maxim (Royal Society of Chemistry (RSC), 2021-04-28)
      Article
      Open Access
      Solar cells based on quaternary kesterite compounds like Cu2ZnGeSe4 are complex systems where the variation of one parameter can result in changes in the whole system, and, as consequence, in the global performance of the ...
    • Insights into interface and bulk defects in a high efficiency kesterite-based device 

      Fonoll Rubio, Robert; Andrade Arvizu, Jacob; Blanco Portals, Javier; Becerril Romero, Ignacio; Guc, Maxim; Saucedo Silva, Edgardo Ademar; Peiró Martínez, Francesca; Estradé Albiol, Sònia; Izquierdo Roca, Víctor; Pérez Rodríguez, Alejandro (2021-01-01)
      Article
      Restricted access - publisher's policy
      This work provides a detailed analysis of a high efficiency Cu2ZnSnSe4 device using a combination of advanced electron microscopy and spectroscopy techniques. In particular, a full picture of the different defects present ...
    • 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
      Restricted access - publisher's policy
      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 ...
    • Polarized Raman scattering study of kesterite type Cu2 ZnSnS4 single crystals 

      Guc, Maxim; Levcenko, Sergiu; Bodnar, Ivan V.; Izquierdo-Roca, Victor; Fontane, Xavier; Volkova, Larisa V.; Arushanov, Ernest; Perez-Rodriguez, Alejandro (Nature Publishing Group, 2016-01-18)
      Article
      Open Access
      A non-destructive Raman spectroscopy has been widely used as a complimentary method to X-ray diffraction characterization of Cu2 ZnSnS4 (CZTS) thin films, yet our knowledge of the Raman active fundamental modes in this ...
    • Raman scattering quantitative assessment of the anion composition ratio in Zn(O,S) layers for Cd-free chalcogenide-based solar cells 

      Guc, Maxim; Neuschitzer, M.; Hariskos, D.; Bauer, A.; Witte, W.; Hempel, W.; Calvo-Barrio, L.; Pistor, P.; Perez-Rodriguez, A.; Izquierdo-Roca, Victor (Royal Society of Chemistry, 2016)
      Open Access
      This work reports the use of Raman scattering for the chemical characterization of Zn(O,S) layers that are being developed as a Cd-free alternative for the buffer layer in advanced chalcogenide solar cells. The nanometric ...
    • 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 ...