TY - GEN
T1 - Flexible Carbon Nanotube Sensors with Screen Printed and Interdigitated Electrodes
AU - Loghin, Florin C.
AU - Bobinger, Marco
AU - Rivadeneyra, Almudena
AU - Becherer, Markus
AU - Lugli, Paolo
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/7
Y1 - 2019/7
N2 - Printed electronics is a rapidly emerging field due to the development of new types of functional materials and inks that can be deposited using well-known and widely established printing techniques. Commonly, sensor structures or interconnects on printed circuit boards (PCBs) are fabricated using wet etching and photolithography steps. To overcome the limitations of those techniques, in this contribution, we use a simple and scalable screen printing process to deposit silver-flake based interdigitated electrode (IDE) structures onto sprayed carbon nanotube (CNT) films. The silver (Ag) structures show a low sheet resistance and resistivity of 0.14 Ω/sq. and 6.110-7 Ωm, respectively, at a thickness of around 4.4 μm. Attributed to its flexibility and robustness, a polyimide foil (Kapton®HN) was selected as the substrate. The CNT films with printed IDE that are entirely fabricated in the ambient air are then characterized as resistive gas sensors to detect ammonia (NH3). A high response of around 20% is achieved for an NH3 concentration of 50 ppm.
AB - Printed electronics is a rapidly emerging field due to the development of new types of functional materials and inks that can be deposited using well-known and widely established printing techniques. Commonly, sensor structures or interconnects on printed circuit boards (PCBs) are fabricated using wet etching and photolithography steps. To overcome the limitations of those techniques, in this contribution, we use a simple and scalable screen printing process to deposit silver-flake based interdigitated electrode (IDE) structures onto sprayed carbon nanotube (CNT) films. The silver (Ag) structures show a low sheet resistance and resistivity of 0.14 Ω/sq. and 6.110-7 Ωm, respectively, at a thickness of around 4.4 μm. Attributed to its flexibility and robustness, a polyimide foil (Kapton®HN) was selected as the substrate. The CNT films with printed IDE that are entirely fabricated in the ambient air are then characterized as resistive gas sensors to detect ammonia (NH3). A high response of around 20% is achieved for an NH3 concentration of 50 ppm.
UR - https://www.scopus.com/pages/publications/85081046818
U2 - 10.1109/NANO46743.2019.8993685
DO - 10.1109/NANO46743.2019.8993685
M3 - Conference contribution
AN - SCOPUS:85081046818
T3 - Proceedings of the IEEE Conference on Nanotechnology
SP - 1
EP - 4
BT - 19th IEEE International Conference on Nanotechnology, NANO 2019
PB - IEEE Computer Society
T2 - 19th IEEE International Conference on Nanotechnology, NANO 2019
Y2 - 22 July 2019 through 26 July 2019
ER -