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. 2012 Feb 14;24(7):906-10.
doi: 10.1002/adma.201104331.

Efficiency enhancement of organic solar cells by fabricating periodic surface textures using direct laser interference patterning

Lars Müller-Meskamp  1 , Yong Hyun Kim, Teja Roch, Simone Hofmann, Reinhard Scholz, Sebastian Eckardt, Karl Leo, Andrés Fabián Lasagni
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Efficiency enhancement of organic solar cells by fabricating periodic surface textures using direct laser interference patterning

Lars Müller-Meskamp et al. Adv Mater. .

Abstract

Direct laser interference patterning (DLIP) is used to fabricate large area, two-dimensional periodic surface patterns on polyethylene terephthalate (PET) substrates to enhance the performance of ZnPc:C60 solar cells by light concentration in the absorber layer. Comparing the power conversion efficiencies to the reference cell on flat PET, a relative increase of 21% is observed for the hexagonal pattern with 0.7 μm period, depicted in the figure.

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