Carbon-nanotube-based flexible devices using a mechanical transfer method
| Autor: | Kyongsoo Lee, Byeong Kwon Ju |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Fabrication Polydimethylsiloxane business.industry Bend radius Nanotechnology Surfaces and Interfaces Carbon nanotube Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry law Materials Chemistry Optoelectronics Deposition (phase transition) Dry transfer Adhesive Electrical and Electronic Engineering business Current density |
| Zdroj: | physica status solidi (a). 209:2082-2086 |
| ISSN: | 1862-6300 |
| DOI: | 10.1002/pssa.201228171 |
| Popis: | We describe a new method for the manufacture of single-walled carbon nanotube (SWCNT)-based electrical devices on flexible substrates. The method involves the deposition of a SWCNT films onto polydimethylsiloxane (PDMS) substrates from rigid substrates using the adhesive property of PDMS. This method is similar to the conventional dry transfer method, which is based on surface-energy modification, except that our method involves mechanical transfer using the adhesive property of PDMS under peculiar conditions. The gas-sensing characteristics of the resulting transferred SWCNT films are presented, showing, for example, that typical flexible sensors exhibit a sensitivity of 17.4% for 4-ppm NO2 in a vacuum at room temperature. The performances of the devices are slightly reduced when they are bent to a curved profile with a bending radius of 2 cm (15.9%). The field-emission properties are also investigated. From these emitters, the SWCNTs can be turned on with a field as low as 0.9 V/µm, and an emission current density of 0.75 mA/cm2 at 1.2 V/µm can be attained. Thus, a method for the fabrication of flexible devices is established, which should find practical applications in electronic devices. |
| Databáze: | OpenAIRE |
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