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Nanoimprinted Ceramic Gratings

Nanoimprinted Ceramic Gratings. Daniel C. Ralph, Cornell University, ECCS - 0335765.

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Nanoimprinted Ceramic Gratings

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  1. Nanoimprinted Ceramic Gratings Daniel C. Ralph, Cornell University, ECCS - 0335765 Nanoimprinting is an attractive tool for patterning large substrate areas with nanometer-sized features. We have developed imprinting techniques for all-inorganic ceramic precursor materials. These films have numerous applications, such as photonic back reflectors in flexible solar cells, moth-eye antireflection structures, or catalyst supports for fuel-cell and battery applications. We have recently demonstrated a significant improvement for the efficiency of thin silicon solar cells using imprinted diffractive structures on the backside of the absorber layers (Presentation at 54th EIPBN Conference, Anchorage, AK , 3 June 2010). Two-dimensional grating structures on flexible substrates (35mm x 35mm patterned area each). Top: photograph. Bottom: SEM micrograph. Dirk Weiss and Dustin Richmond, Washington Technology Center Work performed at U. Washington

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