Now showing items 1-6 of 6

    • Atomic layer deposition of vanadium oxide films for crystalline silicon solar cells 

      Ros Costals, Eloi; Masmitjà Rusiñol, Gerard; Almache Hernández, Rosa Estefanía; Pusay Villarroel, Benjamín Andrés; Tiwari, Kunal; Saucedo Silva, Edgardo Ademar; Justin Raj, Chellan; Chul Kim, Byung; Puigdollers i González, Joaquim; Martín García, Isidro; Voz Sánchez, Cristóbal; Ortega Villasclaras, Pablo Rafael (Royal Society of Chemistry (RSC), 2022)
      Article
      Open Access
      Transition metal oxides (TMOs) are promising materials to develop selective contacts on high-efficiency crystalline silicon solar cells. Nevertheless, the standard deposition technique used for TMOs is thermal evaporation, ...
    • 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 ...
    • 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 ...
    • 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
      Open Access
      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. ...
    • 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 ...