Nanostructured biomimetic moth-eye arrays in silicon by nanoimprint lithography

Boden, S.A. and Bagnall, D.M. (2009) Nanostructured biomimetic moth-eye arrays in silicon by nanoimprint lithography At SPIE Optics and Photonics 2009. , 74010J-1-74010J-12.


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The eyes and wings of some species of moth are covered in arrays of subwavelength pillars that have been tuned over millions of years of evolution to reflect as little sunlight as possible. We are investigating ways of exploiting this to reduce reflection from the surfaces of silicon solar cells. Here, we report on the experimental realization of biomimetic antireflective moth-eye arrays in silicon using a technique based on nanoimprint lithography and dry etching. Areas of 1cm x 1cm have been patterned and analysis of reflectance measurements predicts a loss in the performance of a solar cell of only 6.5% compared to an ideal antireflective coating. This compares well with an optimized single layer Si3N4 antireflective coating, for which an 8% loss is predicted.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: 2/8/2009
Venue - Dates: SPIE Optics and Photonics 2009, 2009-08-02
Organisations: Nanoelectronics and Nanotechnology
ePrint ID: 267800
Date :
Date Event
August 2009Published
Date Deposited: 25 Aug 2009 14:22
Last Modified: 17 Apr 2017 18:42
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