Now showing items 1-11 of 11

    • 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 ...
    • 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
      Restricted access - publisher's policy
      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 ...
    • Feasibility of a full chalcopyrite tandem solar cell: a quantitative numerical approach 

      Tiwari, Kunal; Giraldo, Sergio; Placidi, Marcel Jose; Gon Medaille, Axel; Saucedo Silva, Edgardo Ademar; Jehl Li-Kao, Zacharie (Wiley, 2021-07-08)
      Article
      Open Access
      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 ...
    • Hole Transport Layer based on atomic layer deposited V2Ox films: paving the road to semi-transparent CZTSe solar cells 

      Almache Hernández, Rosa Estefanía; Pusay Villarroel, Benjamín Andrés; Tiwari, Kunal; Ros, Eloi; Masmitjà Rusiñol, Gerard; Becerril Romero, Ignacio; Martín García, Isidro; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Saucedo Silva, Edgardo Ademar; Ortega Villasclaras, Pablo Rafael (2021-09-15)
      Article
      Restricted access - publisher's policy
      This work explores the use of very thin transparent vanadium oxide films deposited by atomic layer deposition (ALD) technique as hole transport layer for CZTSe solar cells as alternative of opaque molybdenum based contacts. ...
    • 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 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 ...
    • 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)
      Article
      Open Access
      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 ...
    • 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 ...
    • 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 ...
    • UV-selective optically transparent Zn(O,S)-based solar cells 

      López García, Alex J.; Bauer, Andreas; Fonoll Rubio, Robert; Payno, David; Jehl Li-Kao, Zacharie; Kazim, Samrana; Hariskos, Dimitrios; Izquierdo Roca, Víctor; Saucedo Silva, Edgardo Ademar; Pérez Rodríguez, Alejandro (Wiley, 2020-11-03)
      Article
      Open Access
      This work reports experimental evidence of a photovoltaic effect in transparent UV-selective Zn(O,S)-based heterojunctions. Zn(O,S) has a strong interest for the development of UV-selective solar cells with high transparency ...