Resonant and nonresonant plasmonic nanoparticle enhancement for thin-film silicon solar cells

ArticleinNanotechnology 21(23):235201 · June 2010with28 Reads
Impact Factor: 3.82 · DOI: 10.1088/0957-4484/21/23/235201 · Source: PubMed


    This paper investigates the influence of resonant and nonresonant plasmonic nanostructures,
    such as arrays of silver and aluminum nanoparticles in the forward scattering configuration,
    on the optical absorption in a thin-film amorphous silicon solar cell. It is demonstrated that
    nonresonant coupling of the incident sunlight with aluminum nanoparticles results in higher
    optical absorption in the photoactive region than resonant coupling with silver
    nanoparticle arrays. In addition, aluminum nanoparticles are shown to maintain a net
    positive enhancement of the optical absorption in amorphous silicon, as compared to
    a negative effect by silver nanoparticles, when the nanoparticles are oxidized.