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Low-temperature thermal nanoimprint lithography of anti-reflective structures for flexible low band gap organic solar cells

Kettle, J., Rees, A., Brousseau, Emmanuel Bruno John Paul and Horie, M. 2013. Low-temperature thermal nanoimprint lithography of anti-reflective structures for flexible low band gap organic solar cells. Journal of Physics D: Applied Physics 46 (10) , 105102. 10.1088/0022-3727/46/10/105102

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Abstract

The effect of adding anti-reflective structures to a PCPDTBT : PCBM organic solar cell on a flexible substrate using a one-step thermal-nanoimprint lithography process has been studied. In order to process nanostructures onto polyethylene terephthalate (PET) substrates, a low glass transition polymer was used. The power conversion efficiency (PCE) was increased by 4% when the light was irradiated at normal incidence. However, at oblique angles of incidence (80°), a 32% relative increase in PCE was observed showing the enhanced light-capturing capability of the anti-reflective features. This efficiency enhancement was attributed to reduced reflection at the air–PET interface, which is supported by optical modelling data.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Centre for Advanced Manufacturing Systems At Cardiff (CAMSAC)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: IOP Science
ISSN: 0022-3727
Last Modified: 04 Jun 2017 04:47
URI: http://orca-mwe.cf.ac.uk/id/eprint/44864

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