Enhanced NO₂ Sensing Performance of Graphene with Thermally Induced Defects.

ABSTRACT: This paper demonstrates the enhanced NO₂ sensing performance of graphene with defects generated by rapid thermal annealing (RTA). A high temperature of RTA (300-700 °C) was applied to graphene under an argon atmosphere to form defects on sp² carbon lattices. The density of defects proportionally increased with increasing the RTA temperature. Raman scattering results confirmed significant changes in sp² bonding. After 700 °C RTA, I_D/I_G, I_2D/I_G, and FWHM (full width at half maximum)(G) values, which are used to indirectly investigate carbon-carbon bonds' chemical and physical properties, were markedly changed compared to the pristine graphene. Further evidence of the thermally-induced defects on graphene was found v

SUBMITTER: Lim N 

PROVIDER: S-EPMC8124493 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature