Fermi-Level Dependence of the Chemical Functionalization of Graphene with Benzoyl Peroxide
- Resource Type
- Article
- Authors
- Liu, Dandan; He, Mengci; Huang, Can; Sun, Xiudong; Gao, Bo
- Source
- The Journal of Physical Chemistry - Part C; May 2017, Vol. 121 Issue: 19 p10546-10551, 6p
- Subject
- Language
- ISSN
- 19327447; 19327455
The dependence of the chemical functionalization of graphene on its Fermi level was investigated based on a heat-initiated solid-phase chemical reaction with benzoyl peroxide. The chemical functionalization was performed during application of a gate voltage to shift the Fermi level. A gate-voltage-induced variation of the reactant concentration on the graphene surface could not occur because of the neutral intermediate and the solid-phase reaction. Raman measurements on functionalized graphene showed that a higher Fermi level led to more reacted carbon atoms, which was interpreted in terms of the energy-level alignment between graphene and phenyl radical.