Solution-processed copper-nickel nanowire anodes for organic solar cells

This work describes a process to make anodes for organic solar cells from copper-nickel nanowires with solution-phase processing. Copper nanowire films were coated from solution onto glass and made conductive by dipping them in acetic acid. Acetic acid removes the passivating oxide from the surface...

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Bibliographic Details
Published in:Nanoscale 2014-06, Vol.6 (11), p.5980-5988
Main Authors: Stewart, Ian E, Rathmell, Aaron R, Yan, Liang, Ye, Shengrong, Flowers, Patrick F, You, Wei, Wiley, Benjamin J
Format: Article
Language:English
Subjects:
Acetic acid
ANNEALING PROCESSES
ANODES
CONTACT RESISTANCE
Copper
Dipping
MICROSTRUCTURES
MICROWIRE
Nanowires
ORGANIC COMPOUNDS
Oxidation resistance
OXIDES
Photovoltaic cells
Solar cells
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Summary:This work describes a process to make anodes for organic solar cells from copper-nickel nanowires with solution-phase processing. Copper nanowire films were coated from solution onto glass and made conductive by dipping them in acetic acid. Acetic acid removes the passivating oxide from the surface of copper nanowires, thereby reducing the contact resistance between nanowires to nearly the same extent as hydrogen annealing. Films of copper nanowires were made as oxidation resistant as silver nanowires under dry and humid conditions by dipping them in an electroless nickel plating solution. Organic solar cells utilizing these completely solution-processed copper-nickel nanowire films exhibited efficiencies of 4.9%.
ISSN:2040-3364
2040-3372
DOI:10.1039/c4nr01024h