Langmuir-Blodgett assembly of ultra-large graphene oxide films for transparent electrodes

Monolayer ultra-large graphene oxide (UL-GO) sheets with diameter up to about 100 μm were synthesized based on a chemical method. Transparent conductive films were produced using the UL-GO sheets that were deposited layer-by-layer on a substrate by the Langmuir-Blodgett (L-B) assembly technique. The...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2012-10, Vol.22 (10), p.2504-2511
Main Authors: ZHENG, Qing-bin, SHI, Li-fang, YANG, Jun-he
Format: Article
Language:English
Subjects:
Assembly
Electrical resistivity
Electrodes
Graphene
graphene oxide
Langmuir-Blodgett assembly
Langmuir-Blodgett films
Oxide coatings
Oxides
Resistivity
thermal reduction
transparent electrode
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Summary:Monolayer ultra-large graphene oxide (UL-GO) sheets with diameter up to about 100 μm were synthesized based on a chemical method. Transparent conductive films were produced using the UL-GO sheets that were deposited layer-by-layer on a substrate by the Langmuir-Blodgett (L-B) assembly technique. The films produced from UL-GO sheets with a close-packed flat structure exhibit exceptionally high electrical conductivity and transparency after thermal reduction. A remarkable sheet resistance of 605 ωsq at 86% transparency is obtained, which outperforms the graphene films grown on a Ni substrate by chemical vapor deposition. The technique used to produce transparent conductive films is facile, inexpensive and tunable for mass production.
ISSN:1003-6326
DOI:10.1016/S1003-6326(11)61492-1