Nanoimprinted Tio 2 sol-gel passivating diffraction gratings for solar cell applications

Jérémy Barbé*, Andrew Francis Thomson, Er Chien Wang, Keith McIntosh, Kylie Catchpole

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    39 Citations (Scopus)

    Abstract

    We report the fabrication and characterization of TiO 2 sol-gel diffraction gratings on silicon substrates by using nanoimprint lithography. The gratings are homogeneous and free of defects and cover an area of 25cm 2. Minority carrier lifetimes of up to 900μs for imprinted samples under illumination are reported, which Kelvin probe measurements indicate is due to light-generated negative charge in the films. The structures reported here are very promising as light-trapping, passivating coatings for solar cells.

    Original languageEnglish
    Pages (from-to)143-148
    Number of pages6
    JournalProgress in Photovoltaics: Research and Applications
    Volume20
    Issue number2
    DOIs
    Publication statusPublished - Mar 2012

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