Combined plasmonic and dielectric rear reflectors for enhanced photocurrent in solar cells

A. Basch*, F. J. Beck, T. Söderström, S. Varlamov, K. R. Catchpole

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    38 Citations (Scopus)

    Abstract

    A doubling of the photocurrent due to light trapping is demonstrated by the combination of silver nanoparticles with a highly reflective back scatterer fabricated by Snow Globe Coating on the rear of a 2 μm polycrystalline silicon thin film solar cell. The binder free high refractive index titania particles can overcome light losses due to transmission. Modelling indicates that adding plasmonic nanoparticles to the back scatterer widens the angular distribution of scattered light such that over 80% of long wavelength light is scattered outside the Si/air loss cone and trapped in the cell, compared to 30% for the titania alone.

    Original languageEnglish
    Article number243903
    JournalApplied Physics Letters
    Volume100
    Issue number24
    DOIs
    Publication statusPublished - 11 Jun 2012

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