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Formation of Nanopatterned Polymer Blends in Photovoltaic Devices
University of Cambridge, England; University of Cambridge, England.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-2582-1740
University of Cambridge, England.
University of Cambridge, England.
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2010 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 10, no 4, 1302-1307 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, we demonstrate a double nanoimprinting process that allows the formation of nanostructured polymer heterojunctions of composition and morphology that can be selected independently. We fabricated photovoltaic (PV) devices with extremely high densities (10(14)/mm(2)) of interpenetrating nanoscale columnar features in the active polymer blend layer. The smallest feature sizes are as small as 25 nm on a 50 nm pitch, which results in a spacing of hererojunctions at or below the exciton diffusion length. Photovoltaic devices based on double-imprinted poly((9,9-dioctylfluorene)-2,7-diyl-alt-[4,7-bis(3-hexylthien-5-yl)-2,1,3-benzothiadiazole]-2,2 diyl) (F8TBT)/poly(3-hexylthiophene) (P3HT) films are among the best polymer polymer blend devices reported to date with a power conversion efficiency (PCE, eta(e)) of 1.9%.

Place, publisher, year, edition, pages
American Chemical Society , 2010. Vol. 10, no 4, 1302-1307 p.
Keyword [en]
Polymer photovoltaics; nanoscale morphology; nanoimprint lithography; polymer blends
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:liu:diva-115697DOI: 10.1021/nl904098mISI: 000276557100037PubMedID: 20199061OAI: oai:DiVA.org:liu-115697DiVA: diva2:796100
Note

Funding Agencies|Engineering and Physical Science Research Council; Gates Cambridge Trust

Available from: 2015-03-18 Created: 2015-03-18 Last updated: 2017-12-04

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Gao, Feng

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