High durable three‐dimensional electroconductive patterns on textiles: Direct laser scribing of crosslinked graphene oxide sheets

Abstract

AbstractFor smart textiles and multifunctional wearable electronic devices, it is mandatory to fabricate high efficient and durable fine electroconductive patterns as circuits and elements. In this study, a fast method has been presented to direct writing of desired durable electroconductive patterns on textiles by using laser scribing of graphene oxide (GO) coatings. Laser CO2 is used to produce fast, direct, high resolution and three‐dimensional (3D) patterns of crosslinked reduced graphene oxide (LCrGO) on polyethylene terephthalate (PET) fabric. The choice of this method ensured a high electrical conductivity along with great durability that makes the final fabric as great structure for fine multifunctional wearable electronic devices. X‐ray diffraction, Raman spectroscopy, X‐ray photoelectron spectroscopy and field emission scanning electron microscope have been used to characterize the structure and morphology of LCrGO patterns on PET fabric. The sheet resistance of the LCrGO patterns on PET fabrics decreased associated with the increase of laser power as a main source of in situ photochemical/thermal reduction. The sheet resistance for the best LCrGO patterns was about 3.7 kΩ/sq that can be used in different smart and wearable electronic devices. After washings and exposure to mechanical deformation cycles, the patterns showed good conductivity retention of about 90%.