Controlled volume production of simultaneously B/N co-doped reduced graphene oxide nanoflakes using femtosecond laser ablation

•Novel method to simultaneously reduce graphene oxide nanoflakes and dope them with B and N atoms.•Control over graphene oxide reduction.•Control over B and N doping concentration, and doping sites.•Band gap energy engineering for potential electrical or optical applications.•Environmentally friendly, quick, easy, and scalable process.