Transferred wrinkled Al2O3 for highly stretchable and transparent graphene–carbon nanotube transistors
- 3 March 2013
- journal article
- letter
- Published by Springer Science and Business Media LLC in Nature Materials
- Vol. 12 (5), 403-409
- https://doi.org/10.1038/nmat3572
Abstract
Despite recent progress in producing transparent and bendable thin-film transistors using graphene and carbon nanotubes1,2, the development of stretchable devices remains limited either by fragile inorganic oxides or polymer dielectrics with high leakage current3,4. Here we report the fabrication of highly stretchable and transparent field-effect transistors combining graphene/single-walled carbon nanotube (SWCNT) electrodes and a SWCNT-network channel with a geometrically wrinkled inorganic dielectric layer. The wrinkled Al2O3 layer contained effective built-in air gaps with a small gate leakage current of 10−13 A. The resulting devices exhibited an excellent on/off ratio of ~105, a high mobility of ~40 cm2 V−1 s−1 and a low operating voltage of less than 1 V. Importantly, because of the wrinkled dielectric layer, the transistors retained performance under strains as high as 20% without appreciable leakage current increases or physical degradation. No significant performance loss was observed after stretching and releasing the devices for over 1,000 times. The sustainability and performance advances demonstrated here are promising for the adoption of stretchable electronics in a wide variety of future applications.Keywords
This publication has 28 references indexed in Scilit:
- Extremely Bendable, High-Performance Integrated Circuits Using Semiconducting Carbon Nanotube Networks for Digital, Analog, and Radio-Frequency ApplicationsNano Letters, 2012
- Roll-to-roll production of 30-inch graphene films for transparent electrodesNature Nanotechnology, 2010
- Top-Gated Graphene Nanoribbon Transistors with Ultrathin High-k DielectricsNano Letters, 2010
- Cross-Linked Polymer Gate Dielectric Films for Low-Voltage Organic TransistorsChemistry of Materials, 2009
- Large-scale pattern growth of graphene films for stretchable transparent electrodesNature, 2009
- Stretchable and compressible thin films of stiff materials on compliant wavy substratesApplied Physics Letters, 2008
- Enhancement of Conductivity by Diameter Control of Polyimide-Based Electrospun Carbon NanofibersThe Journal of Physical Chemistry B, 2007
- High-performance electronics using dense, perfectly aligned arrays of single-walled carbon nanotubesNature Nanotechnology, 2007
- Buckled and Wavy Ribbons of GaAs for High‐Performance Electronics on Elastomeric SubstratesAdvanced Materials, 2006
- A Stretchable Form of Single-Crystal Silicon for High-Performance Electronics on Rubber SubstratesScience, 2006