• DocumentCode
    1855299
  • Title

    A general light trapping theory for grating structures

  • Author

    Yu, Zongfu ; Raman, Aaswath ; Fan, Shanhui

  • Author_Institution
    Ginzton Lab., Stanford Univ., Stanford, CA, USA
  • fYear
    2011
  • fDate
    19-24 June 2011
  • Abstract
    We use a rigorous electromagnetic approach to analyze the fundamental limit of light-trapping enhancement in grating structures. This limit can exceed the bulk limit of 4n2, but has significant angular dependency. We explicitly show that 2D gratings provide more enhancement than 1D gratings. We also show the effects of the grating profile´s symmetry on the absorption enhancement limit. Our findings provide general guidance for the design of grating structures for light-trapping solar.
  • Keywords
    diffraction gratings; light absorption; radiation pressure; solar cells; 2D gratings; absorption enhancement limit; angular dependency; electromagnetic approach; grating profile symmetry; grating structures; light trapping theory; light-trapping enhancement; light-trapping solar cells; Absorption; Charge carrier processes; Films; Gratings; Mirrors; Resonant frequency;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Photovoltaic Specialists Conference (PVSC), 2011 37th IEEE
  • Conference_Location
    Seattle, WA
  • ISSN
    0160-8371
  • Print_ISBN
    978-1-4244-9966-3
  • Type

    conf

  • DOI
    10.1109/PVSC.2011.6185933
  • Filename
    6185933
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1855299