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Elaborate Control of Inkjet Printer for Fabrication of Chip-based Supercapacitors
Published on: November 30, 2021
Electrical transport and field-effect transistors using inkjet-printed SWCNT films having different functional side
Eduardo Gracia-Espino1, Giovanni Sala, Flavio Pino
1Advanced Materials Department, Instituto Potosino de Investigacion Cientifica y Tecnologica, camino a la presa San Jose 2055, Col. Lomas 4. Seccion, 78216 San Luis Potosi, Mexico.
ACS Nano
|May 21, 2010
Summary
Inkjet-printed single-wall carbon nanotube networks show tunable electrical properties based on chemical functionalization. Poly(ethylene glycol) functionalization resulted in significant nonlinear transport and a high on/off ratio, indicating nonmetallic behavior.
Area of Science:
- Materials Science
- Nanotechnology
- Electrical Engineering
Background:
- Carbon nanotubes (CNTs) offer unique electrical properties for electronic devices.
- Controlling CNT network properties through chemical functionalization is crucial for device performance.
- Inkjet printing provides a scalable method for fabricating nanoscale electronic components.
Purpose of the Study:
- To investigate the impact of chemical functionalization on the electrical properties of inkjet-printed single-wall carbon nanotube (SWNT) networks.
- To characterize field-effect transistors (FETs) fabricated using functionalized SWNTs.
- To explore the potential of inkjet printing for creating advanced nanotube-based electronics.
Main Methods:
- Preparation of stable, water-based inks of functionalized SWNTs (carboxylic acid, amide, poly(ethylene glycol), polyaminobenzene sulfonic acid).
- Inkjet printing of SWNT films onto silicon chips with back-gate configuration.
- Measurement of source-drain transfer characteristics and gate-effect for electrical property analysis.
Main Results:
- Chemical functional groups significantly influence the electrical behavior of SWNT networks.
- Poly(ethylene glycol)-functionalized SWNTs exhibited notable nonlinear transport and a high channel current on/off ratio (~70).
- Inkjet-printed films displayed a positive temperature coefficient of resistance, indicative of nonmetallic behavior.
Conclusions:
- Chemical functionalization is a key factor in tailoring the electrical performance of inkjet-printed SWNT networks.
- Inkjet printing is a viable technique for fabricating functional SWNT-based electronic devices.
- The observed properties suggest potential applications in flexible electronics and sensors.
