Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics

Koga, Hirotaka; Nogi, Masaya; Komoda, Natsuki et al.

NPG Asia Materials, 2014, 6, e93

Number of Access:836（2025-08-14 05:02 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/78442

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Title
Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics
Creator
NRID
1000030634539 1000030634539
ORCID
0000-0001-6295-1731 0000-0001-6295-1731
researchmap permalink
hkoga hkoga
Scopus Author ID
7201439917 7201439917
CreatorName
Koga, Hirotaka
NRID
1000080379031 1000080379031
researchmap permalink
read0151141 read0151141
Scopus Author ID
9846851200 9846851200
CreatorName
Nogi, Masaya
CreatorName
Komoda, Natsuki
CreatorName
Nge, Thi Thi
NRID
1000020622038 1000020622038
CreatorName
Sugahara, Tohru
NRID
1000010154444 1000010154444
researchmap permalink
ksuganuma ksuganuma
CreatorName
Suganuma, Katsuaki
Subject
Cellulose nanofiber paper
Coating process
Flexible electronics
Paper electronics
Transparent conductive film
Description
Koga, H., Nogi, M., Komoda, N. et al. Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics. NPG Asia Mater 6, e93 (2014). https://doi.org/10.1038/am.2014.9.
Abstract
We demonstrate the fabrication of highly transparent conductive networks on a cellulose nanofiber paper, called cellulose nanopaper. Uniform coating of the conductive nanomaterials, such as silver nanowires (AgNWs) and carbon nanotubes, is achieved by simple filtration of their aqueous dispersions through the cellulose nanopaper, which acts as both filter and transparent flexible substrate. The as-prepared AgNW networks on the nanopaper offer sheet resistance of 12Xsq.Ω1 with optical transparency of 88%, which is up to 75 times lower than the sheet resistance on a polyethylene terephthalate film prepared by conventional coating processes. These results indicate that the 'filtration coating' provides uniformly connected conductive networks because of drainage in the perpendicular direction through paper-specific nanopores, whereas conventional coating processes inevitably cause self-aggregation and uneven distribution of the conductive nanomaterials because of the hard-to-control drying process, as indicated by the well-known coffee-ring effect. Furthermore, the conductive networks are embedded in the surface layer of the nanopaper, showing strong adhesion to the nanopaper substrate and providing foldability with negligible changes in electrical conductivity. This filtration process is thus expected to offer an effective coating approach for various conductive materials, and the resulting transparent conductive nanopaper is a promising material for future paper electronics.
Publisher
Nature Publishing Group
Source Title
NPG Asia Materials
Volume (Issue)
6
Page
e93
Date of Issued
2014-03-21
Language
English
Handle URL
https://hdl.handle.net/11094/78442
PISSN
18844049
eISSN
18844057
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1038/am.2014.9
Access Rights
open access
CopyRight
© 2014 The Author(s). This article is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article