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Bioinspir Biomim. 2012 Mar;7(1):016003. doi: 10.1088/1748-3182/7/1/016003. Epub 2011 Dec 8.

Studying nanostructured nipple arrays of moth eye facets helps to design better thin film solar cells.

Author information

1
Research Centre for Functional Materials and Nanomolecular Science, Electronic Devices and Nanophotonics Laboratory, Jacobs University Bremen, 28759 Bremen, Germany.

Abstract

Nipples on the surface of moth eye facets exhibit almost perfect broadband anti-reflection properties. We have studied the facet surface micro-protuberances, known as corneal nipples, of the chestnut leafminer moth Cameraria ohridella by atomic force microscopy, and simulated the optics of the nipple arrays by three-dimensional electromagnetic simulation. The influence of the dimensions and shapes of the nipples on the optics was studied. In particular, the shape of the nipples has a major influence on the anti-reflection properties. Furthermore, we transferred the structure of the almost perfect broadband anti-reflection coatings to amorphous silicon thin film solar cells. The coating that imitates the moth-eye array allows for an increase of the short circuit current and conversion efficiency of more than 40%.

PMID:
22155981
DOI:
10.1088/1748-3182/7/1/016003
[Indexed for MEDLINE]

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