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

Barbe, Jeremy; Thomson, Andrew; Wang, Er-Chien (Eric); McIntosh, Keith; Catchpole, Kylie


We report the fabrication and characterization of TiO2 sol-gel diffraction gratings on silicon substrates by using nanoimprint lithography. The gratings are homogeneous and free of defects and cover an area of 25cm2. 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...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Progress in Photovoltaics: Research and Applications
DOI: 10.1002/pip.1131


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