Browsing by Author "Jehl Li-Kao, Zacharie"

Now showing items 1-11 of 11

    • 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; 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 ...

    • 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; Resalati, Shahaboddin; Guc, Maxim; Placidi, Marcel Jose (2022-01-03)
      Article
      Open Access
      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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • Insights on the limiting factors of Cu2ZnGeSe4 based solar cells 

      Anefnaf, Ikram; Aazou, Safae; Vidal Fuentes, Pedro; Fonoll Rubio, Robert; Tiwari, Ashish Kumar; Jehl Li-Kao, Zacharie; Guc, Maxim; Saucedo Silva, Edgardo Ademar; Sekkat, Zouheir (2021-08-01)
      Article
      Restricted access - publisher's policy
      Germanium-based wide band gap kesterite semiconductor Cu2ZnGe(S,Se)4 (CZGeSSe) is considered a very promising absorber compound as top cell in tandem devices. Autonomy to tailor the band gap from ~1.47 eV (Cu2ZnGeSe4-CZGeSe) ...

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

      Gon Medaille, Axel; Tiwari, Kunal; Giraldo, Sergio; Placidi, Marcel Jose; Saucedo Silva, Edgardo Ademar; Jehl Li-Kao, Zacharie (Wiley, 2021-11-24)
      Article
      Open Access
      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 ...

    • 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)
      Article
      Open Access
      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 ...

    • 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 ...