Anzeige
Erschienen in:
25.08.2021
Chemiresistive-based carbon dioxide sensor with enhanced sensitivity
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 18/2021
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
In this work, we report on a highly sensitive carbon dioxide sensor that can operate at low temperatures with rapid detection capabilities. The sensor was fabricated by depositing hydrothermally prepared graphene oxide/cupric oxide nanocomposite onto a glass substrate by a spin coating technique. Morphology, chemical state, and atomic concentration of sensing material were studied by FESEM and XPS analysis. The fabricated sensor shows a remarkable sensing response of 963% for 750 ppm of carbon dioxide gas at an operating temperature of 100 °C. Additionally, the sensor also exhibited a fast response time of 25 s and a short recovery time of 8 s when exposed to different concentrations of carbon dioxide gas from 250 to 750 ppm. Results obtained from the experimental analysis reveals that the p–n heterojunction interface resulting from the decoration of nanostructured CuO over high surface area graphene oxide is responsible for enhanced sensitivity and repeatability of the sensor.