Recent Advances in the Fabrication of Graphene-based Flexible Electronic Devices by Laser Direct Writing

Compared with traditional electronic devices, flexible electronic devices have unique flexibility and ductility, which can adapt to different working condition and meet the deformation needs of equipment.Graphene is an ideal material for developing flexible electronic devices.However, traditional graphene processing technologies often involve high temperature and chemical solvents, require high-cost, complicated technical routes and environmental pollution, which are not suitable for future development.Laser direct writing (LDW) technology does not require masks and post-processing, and has the advantages of fast processing speed, large scanning area, and high spatial resolution.Therefore, it has been widely used in modern industry.Recent research showed that LDW can produce graphene from a variety of polymers and even natural materials, which undoubtedly further enhances the potential of graphene in flexible electronic devices.In this work, the precursors of graphene prepared by LDW are summarized, and the corresponding evolution process, processing principle and auxiliary processing equipment are introduced in detail.The huge advances in the design and manufacture of flexible electronic devices by the three strategies of transfer process, strain-accommodating engineering and Kirigami-inspired structure, and their latest applications in supercapacitors, sensors, nanogenerators and actuators are summarized.Furthermore, the development trend and challenges are discussed.