Graphene/mica based ammonia gas sensors

• Main Authors: Ben Aziza, Zeineb, Zhang, Qing, Baillargeat, Dominique
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2015
• Subjects: DRNTU::Science::Physics
• Online Access: https://hdl.handle.net/10356/104179; http://hdl.handle.net/10220/24705
• Institution: Nanyang Technological University

In this paper, graphene/mica and graphene/SiO2 based ammonia gas sensors are compared. It is found that adsorbed NH3 molecules result in up-shifting of the Fermi level in graphene, leading to a significant increase in graphene resistance. In comparison with SiO2 supporting substrate, the mica suppor...