Single-walled carbon nanotube transparent conductive films fabricated by reductive dissolution and spray coating for organic photovoltaics

Solutions of unbundled and unbroken single-walled carbon nanotubes have been prepared using a reductive dissolution process. Transparent conductive films spray-coated from these solutions show a nearly twofold improvement in the ratio of electrical conductivity to optical absorptivity versus those d...

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Bibliographic Details
Published in:Applied physics letters 2014-12, Vol.105 (25)
Main Authors: Ostfeld, Aminy E., Catheline, Amélie, Ligsay, Kathleen, Kim, Kee-Chan, Chen, Zhihua, Facchetti, Antonio, Fogden, Siân, Arias, Ana Claudia
Format: Article
Language:English
Subjects:
Absorptivity
Applied physics
Dissolution
Electrical resistivity
Electrodes
Energy conversion efficiency
Indium tin oxides
Nanotubes
Organic chemistry
Photovoltaic cells
Single wall carbon nanotubes
Solar cells
Spray coating
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Summary:Solutions of unbundled and unbroken single-walled carbon nanotubes have been prepared using a reductive dissolution process. Transparent conductive films spray-coated from these solutions show a nearly twofold improvement in the ratio of electrical conductivity to optical absorptivity versus those deposited from conventional aqueous dispersions, due to substantial de-aggregation and sizable nanotube lengths. These transparent electrodes have been utilized to fabricate P3HT-PCBM organic solar cells achieving power conversion efficiencies up to 2.3%, comparable to those of solar cells using indium tin oxide transparent electrodes.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4904940