Laser reduction of graphene oxide thin films for nanoelectronic application

In this article a new approach to graphene oxide spray deposition is demonstrated. Developed spray methodic allows to fabricate uniform low thickness graphene oxide coatings on a wide range of substrates without surface hydrophilization. A comparison of films obtained by spray a spin coating methods is given. The perspectives of industrial application of developed method for production of graphene oxide bio- and gas sensors are considered. Results of graphene oxide films local reduction performed by 1030 nm continuous CO2 laser engraver and 445 nm solid-state laser are presented. Features and difficulties of thin graphene oxide films reduction are discussed.