Now showing items 1-10 of 10

    • Dielectric metal dielectric antireflection plasmonic layers 

      Ros Costals, Eloi (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      Dielectric/Metal/Dielectric structures using Transition Metal Oxides (TMOs) as a dielectric layer and very thin-film layers of metal will be fabricated and their opto-electrical properties evaluated. In particular, ...
    • Effect of permanent dipole layers in the electrical characteristics of electronic devices and solar cells 

      Ros Costals, Eloi; Pusay Villarroel, Benjamín Andrés; Almache Hernández, Rosa Estefanía; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim (2019)
      Conference lecture
      Open Access
    • Germanium photovoltaic cells with MoO x hole-selective contacts 

      Alcañiz, A.; López Rodríguez, Gema; Martín García, Isidro; Jiménez Pagán, Alba; Datas Medina, Alejandro; Calle, Eric; Ros Costals, Eloi; Gerling Sarabia, Luis Guillermo; Voz Sánchez, Cristóbal; del Cañizo Nadal, Carlos; Alcubilla González, Ramón (2019-03-15)
      Article
      Open Access
      Very thin, thermally evaporated MoOx (x¿<¿3) layer has been used as transparent hole-selective contact on an n-type Germanium substrate to effectively demonstrate PV conversion capability. The fabricated MoOx/Ge heterojunction ...
    • Improved electron selectivity in silicon solar cells by cathode modification with a dipolar conjugated polyelectrolyte interlayer 

      Ros Costals, Eloi; Barquera Bibiano, Zaira; Ortega Villasclaras, Pablo Rafael; Gerling Sarabia, Luis Guillermo; Masmitjà Rusiñol, Gerard; Martín García, Isidro; Alcubilla González, Ramón; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal (2019-01-01)
      Article
      Open Access
      This work studies a novel electron-selective contact for n-type silicon solar cells based on the modification of the cathode with a polymeric interlayer. Specifically, a thin layer of the conjugated polyelectrolyte PFN is ...
    • Influence of a gold seed in transparent V2Ox/Ag/V2Ox selective contacts for dopant-free silicon solar cells 

      Nguyen, Hieu Trung; Ros Costals, Eloi; Bertomeu Balaguero, Joan; Asensi López, José Miguel; Andreu Batallé, Jordi; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; Garin Escriva, Moises; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; Alcubilla González, Ramón; Tom, Thomas (2018-11-05)
      Article
      Open Access
      Dielectric/metal/dielectric structures based on vanadium pentoxide with a thin silver interlayer have been optimized to replace traditional transparent electrodes. As would be expected, there is a tradeoff in the metal ...
    • Influence of co-sputtered Ag:Al ultra-thin layers in transparent V2O5/Ag:Al/AZO hole-selective electrodes for silicon solar cells 

      Tom, Thomas; Ros Costals, Eloi; Asensi López, José Miguel; Andreu Batallé, Jordi; Bertomeu Balagueró, Joan; Puigdollers i González, Joaquim; Voz Sánchez, Cristóbal; López-Pintó, Nicolau (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-31)
      Article
      Open Access
      As optoelectronic devices continue to improve, control over film thickness has become crucial, especially in applications that require ultra-thin films. A variety of undesired effects may arise depending on the specific ...
    • Low-cost high-sensitive suns-Voc measurement instrument to characterize c-Si solar cells 

      Ortega Villasclaras, Pablo Rafael; Piñol, Juan M.; Martín García, Isidro; Orpella García, Alberto; Masmitjà Rusiñol, Gerard; López Rodríguez, Gema; Ros Costals, Eloi; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Alcubilla González, Ramón (2020-09-01)
      Article
      Open Access
      Measuring open-circuit voltage (Voc) vs. light intensity (Suns) in solar cells permits the access of cell performance without the series resistance effect. This work shows the implementation of a Suns-Voc measurement system ...
    • Origin of the negative differential resistance in the output characteristics of a picene-based thin-film transistor 

      Ros Costals, Eloi; Puigdollers i González, Joaquim; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-09)
      Article
      Open Access
      In this work, we have fabricated and studied p-type picene thin-film transistors. Although the devices exhibited good electrical performance with high field-effect mobility (up to 1.3 cm 2 /V·s) and on/off ratios above 10 ...
    • Shedding light on the negative differential resistance effect observed in organic thin-film transistors 

      Ros Costals, Eloi; Reig Canyelles, Marta; Voz Sánchez, Cristóbal; Bagdziunas, Gintautas; Ortega Villasclaras, Pablo Rafael; Velasco Castrillo, Maria Dolores; Puigdollers i González, Joaquim (2020-05-05)
      Article
      Restricted access - confidentiality agreement
      Organic semiconductor electronics has the potential to become a solid and industrially feasible technology, with new and stimulating applications such as the flexible and transparent electronic devices. However, organic ...
    • Transparent electrodes based on ultra-thin dielectric-metal-dielectric multilayer structures 

      Ros Costals, Eloi (Universitat Politècnica de Catalunya, 2019-07-11)
      Master thesis
      Open Access
      Photonics has been the focus of an increasing ammount of resarch resources and founding since technological demands of solutions to complex problems can be solved within its scope. In this paper we will specifically focus ...