Enhancement of humidity sensitivity of graphene through functionalization with polyethylenimine

• Main Authors: Ben Aziza, Zeineb, Zhang, Kang, Baillargeat, Dominique, Zhang, Qing
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2015
• Online Access: https://hdl.handle.net/10356/79253; http://hdl.handle.net/10220/38797
• Institution: Nanyang Technological University

In this work, we show that the sensing performance of graphene based humidity sensors can be largely improved through polymer functionalization. Chemical vapor deposited graphene is functionalized with amine rich polymer, leading to electron transfer from amine groups in the polymer to graphene. The...