OT5.67 - Chemoresistive Humidity, NO2 and H2 Sensor Based on 2D- CrCl3 Layered Trihalides Nanoflakes
- Event
- EUROSENSORS XXXVI
2024-09-01 - 2024-09-04
Debrecen (Hungary) - Band
- Lectures
- Chapter
- OT5 - Chemical Sensors
- Author(s)
- V. P., V. R., T. N., C. C. University of L’Aquila - L’Aquila (Italy), D. M., L. O. University of L’Aquila - L’Aquila (Italy),
- Pages
- 97 - 98
- DOI
- 10.5162/EUROSENSORSXXXVI/OT5.67
- ISBN
- 978-3-910600-03-4
- Price
- free
Abstract
Herein we demonstrate that few-layers 2D-CrCl3 transition metal trihalides (TMTHs) MX3 (M= Ti, V, Cr, Mo, Fe, Ru and X = Cl, Br, I), exhibit unveiled capabilities as chemoresistive p-type sensors to humidity (10 - 80% RH @25 °C), NO2 (400 ppb – 1 ppm) and H2 (10 – 250 ppm) at 100 °C operating temperature (OT). Specifically, we investigated the humidity response mechanism unraveling the nature of the reversal of the resistance from an ionic (@25 °C OT) to an electronic conduction regime (@100 °C OT) in humid air conditions. All these findings suggest 2D-CrCl3 platforms as 2D novel interfaces for humidity and gas sensing applications.