SWCNT–Ag nanowire composite for transparent stretchable film heater with enhanced electrical stability

The mechanical stability of transparent and stretchable electrode materials is essential for their application in stretchable electronic devices. In this work, single-walled carbon nanotube (SWCNT)–silver nanowire (Ag NW) composite films were developed as electrode materials to improve the thermal s...

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Bibliographic Details
Published in:Journal of materials science 2018-09, Vol.53 (17), p.12284-12294
Main Authors: Lee, Su Jeong, Kim, Jong-Woo, Park, Jung Hyuk, Porte, Yoann, Kim, Jin-Hoon, Park, Jin-Woo, Kim, Sunghee, Myoung, Jae-Min
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Comparative analysis
Crystallography and Scattering Methods
Electrical resistivity
Electrode materials
Electrodes
Electromigration
Electronic devices
Electronic Materials
Materials Science
Nanotubes
Nanowires
Polymer Sciences
Silver
Single wall carbon nanotubes
Solid Mechanics
Stretching
Substrates
Tensile stress
Thermal stability
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Summary:The mechanical stability of transparent and stretchable electrode materials is essential for their application in stretchable electronic devices. In this work, single-walled carbon nanotube (SWCNT)–silver nanowire (Ag NW) composite films were developed as electrode materials to improve the thermal stability and anti-electromigration characteristics of transparent stretchable film heaters. By adjusting the mixing ratio of SWCNT–Ag NW suspensions, the mechanical and anti-electromigration properties of SWCNT–Ag NW composite films were systematically investigated. Compared to pristine Ag NW film, the 75:1 SWCNT–Ag NW composite film exhibited an excellent thermal stability, improved anti-electromigration properties, and low sheet resistance of 62.3 Ω/sq with an optical transmittance of 83.4%. Moreover, the same composite film prepared on VHB substrate showed only 23.2% increase in the relative sheet resistance after 1000 times of stretching cycles under the tensile stress. Furthermore, the stretchable film heater with 75:1 SWCNT–Ag NW composite electrode exhibited an improved thermal and mechanical stability even after being exposed to 1000 stretching cycles with a peak strain of 200%.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-018-2526-7