4.1.1 - Printed and Light-activated CuO/Cu₂O-Based Chemiresistive Acetone Sensors with Carbon Electrodes
- Event
- EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich - Band
- Lectures
- Chapter
- Chemical Sensors
- Author(s)
- A. Chatterjee, J. Kosel, M. T. Vijjapu - Silicon Austria Labs GmbH,Villach (Austria), B. Jakoby - Johannes Kepler University Linz,Linz (Austria)
- Pages
- 132 - 133
- DOI
- 10.5162/eurosensors2026/4.1.1
- ISBN
- 978-3-910600-12-6
- Price
- free
Abstract
Printed metal-oxide gas sensors commonly rely on thermal activation and metallic interdigitated elec- trodes (IDEs), typically silver, which increases cost and raises sustainability concerns. In this work, as a step toward more sustainable and cost-effective sensor fabrication, carbon-based IDEs were em- ployed in place of conventional silver electrodes together with light activation. Carbon electrodes were screen-printed onto the glass substrates, followed by the deposition of copper layer on the carbon elec- trodes, and subsequently thermally oxidized to form CuO/Cu₂O sensing devices. Owing to the strong optical absorption of CuO/Cu₂O in the yellow spectral region, yellow light was used for sensor activation. The fabricated devices demonstrated repeatable room-temperature sensing of acetone, achieving a sensitivity of approximately 0.0264 %/ppm with efficient light-assisted recovery. These results highlight the potential of fully screen-printed, carbon-electrode-based platforms for developing cost-effective and more sustainable gas sensing systems.