Recent Submissions

  • Application of quasi-steady-state photoconductance technique to lifetime measurements on crystalline germanium substrates 

    Martín García, Isidro; Alcañiz, A.; Jiménez Pagán, Alba; López Rodríguez, Gema; del Cañizo Nadal, Carlos; Datas Medina, Alejandro (2020-07-01)
    Article
    Open Access
    Similar to other high quality crystalline absorbers, an accurate knowledge of surface passivation of crystalline germanium (c-Ge) substrates is crucial for a straightforward improvement of photovoltaic device performance. ...
  • Observation of photovoltaic effect within locally doped silicon nanojunctions using conductive probe AFM 

    Khoury, R.; Alvarez, José; Ohashi, T.; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Jin, Chen; Li, J.; Rusli, E.; Bulkin, P.; Johnson, E. V. (2020-10-01)
    Article
    Restricted access - publisher's policy
    Localized p-doped nanojunctions (200–300 nm in diameter) were formed in n-type crystalline silicon substrates and were characterized using scanning electron microscopy (SEM) and conductive-probe atomic force microscopy ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • Direct etching at the nanoscale through nanoparticle-directed capillary condensation 

    Garín, Moisés; Khoury, Rasha; Martín García, Isidro; Johnson, Erik (2020-04-28)
    Article
    Restricted access - publisher's policy
    We report a method to locally deliver a chemical etchant at the nanoscale in the vapor phase by capillary condensation forming a meniscus at the nanoparticle/substrate interface. The process is simple, scalable and does ...
  • 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 ...
  • Textured PDMS films applied to thin crystalline silicon solar cells 

    Rosell, Arnau; Martín García, Isidro; Garin Escriva, Moises; López Rodríguez, Gema; Alcubilla González, Ramón (2019-12-18)
    Article
    Open Access
    Front surface texturization is a standard procedure used to improve optical properties of photovoltaic devices. In some particular cases, such as when dealing with ultrathin substrates, common texturization techniques can ...
  • Fluid dynamics and heat transfer in the wake of a sphere 

    Rodríguez Pérez, Ivette María; Lehmkuhl, Oriol; Soria Guerrero, Manel; Gómez, Samuel; Domínguez Pumar, Manuel; Kowalski, Lukasz (2019-04)
    Article
    Restricted access - publisher's policy
    Direct numerical simulation and large-eddy simulation have been performed for a heated sphere at Reynolds numbers of $Re=1000$ and $Re=10^4$, respectively. The Prandtl number for both simulations has been $Pr=0.7$. ...
  • Condution mechanisms and charge trapping control in SiO2 nanoparticle MIM capacitors 

    Bheesayagari, Chenna Reddy; Pons Nin, Joan; Orpella García, Alberto; Véliz Noboa, Bremnen Marino; Bermejo Broto, Sandra; Domínguez Pumar, Manuel (2020-06-20)
    Article
    Restricted access - publisher's policy
    The objective of this paper is to present a charge trapping control method for MIM capacitors in whichthe dielectric is made of electrospray-deposited silica nanoparticles. The influence of the bias voltage onthe impedance ...
  • Open loop testing for optimizing the closed loop operation of chemical systems 

    Domínguez Pumar, Manuel; Olm Miras, Josep Maria; Kowalski, Lukasz; Jiménez Serres, Vicente (Pergamon Press, 2020-04-06)
    Article
    Restricted access - publisher's policy
    One way to optimize the operation of chemical systems consists on using closed loop controls while the system is operated. This way, it is possible to optimize the operating point in the plant, process or chemical system ...
  • A million-microchannel multifuel steam reformer for hydrogen production 

    Jiménez Divins, Nuria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (2020-05-05)
    Article
    Restricted access - publisher's policy
    A functionalized silicon micromonolith of 7¿mm in diameter and 210¿µm-thick was evaluated for the production of hydrogen from the steam reforming (SR) of various fuels, containing different functional groups, such as ...
  • Macroporous silicon coated with M/TiO2 (M=Au,Pt) as a highly efficient photoreactor for hydrogen production 

    Serafin, Jaroslaw; Soler Turu, Lluís; Vega Bru, Didac; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (2020-03-07)
    Article
    Restricted access - publisher's policy
    Macroporous silicon disks containing ordered channels of 2 µm side and 0.2 mm length (9 × 106 channels cm-2) have been functionalized with a thin layer of Au/TiO2 and Pt/TiO2 photocatalysts and tested in the photoproduction ...
  • Multicrystalline silicon thin-film solar cells based on vanadium oxide heterojunction and laser-doped contacts 

    Martín García, Isidro; López Rodríguez, Gema; Plentz, Jonathan; Jin, Chen; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Gawlik, Annet; Jia, Guobin; Andrä, Gudrun (2019-10)
    Article
    Open Access
    Liquid phase crystallized (LPC) silicon thin films on glass substrates are a feasible alternative to conventional crystalline silicon (c-Si) wafers for solar cells. Due to substrate limitation, a low-temperature technology ...

View more