Now showing items 1-6 of 6

  • All-silicon spherical-Mie-resonator photodiode with spectral response in the infrared region 

    Garin Escriva, Moises; Fenollosa Esteve, Roberto; Alcubilla González, Ramón; Shi, Lei; Marsal Garvi, Luis Francisco; Meseguer Rico, Francisco Javier (2014-03-10)
    Article
    Open Access
    Silicon is the material of choice for visible light photodetection and solar cell fabrication. However, due to the intrinsic band gap properties of silicon, most infrared photons are energetically useless. Here, we show ...
  • In situ size sorting in CVD synthesis of Si microspheres 

    Garin Escriva, Moises; Fenollosa Esteve, Roberto; Kowalski, Lukasz (Macmillan Publishers, 2016-12-08)
    Article
    Open Access
    Silicon microspheres produced in gas-phase by hot-wall CVD offer unique quality in terms of sphericity, surface smoothness, and size. However, the spheres produced are polydisperse in size, which typically range from 0.5¿µm ...
  • Light harvesting by a spherical silicon microcavity 

    Garin Escriva, Moises; Fenollosa Esteve, Roberto; Ortega Villasclaras, Pablo Rafael; Meseguer Rico, Francisco Javier (American Institute of Physics (AIP), 2016)
    Article
    Open Access
    Silicon colloids are presented as efficient absorbers in the VIS-NIR region. The theory of resonant absorption by Mie modes in a single high-index sphere is reviewed and engineering rules established. The presented model ...
  • Silicon microcavity-based photovoltaic cells for IR harvesting 

    Garin Escriva, Moises; Fenollosa Esteve, Roberto; Alcubilla González, Ramón; Shi, Lei; Marsal Garví, Lluis; Meseguer Rico, Francisco Javier (2014-05-22)
    Article
    Open Access
    Photovoltaic cells on silicon spherical microcavities trap IR light, increasing the probability of photon absorption and enhancing the efficiency of solar energy devices.
  • Silicon nanocavities: Optical properties and applications 

    Fenollosa Esteve, Roberto; Shi, Lei; Rodriguez, Isabelle; Garin Escriva, Moises; Meseguer Rico, Francisco Javier (2014)
    Conference report
    Open Access
    Silicon is the key enabling material for advanced technologies in electronics, and photonics. Recently, we have developed silicon nanocavities (SNs) [1,2] with particle size between 300 nm and 3000 nm. Silicon has an ...
  • Spherical silicon photonic microcavities : From amorphous to polycrystalline 

    Fenollosa Esteve, Roberto; Garin Escriva, Moises; Meseguer Rico, Francisco Javier (2016-06-16)
    Article
    Open Access
    Shaping silicon as a spherical object is not an obvious task, especially when the object size is in the micrometer range. This has the important consequence of transforming bare silicon material in a microcavity, so it is ...