Multilayer graphene supported flexible optoelectronic devices

Here, we demonstrate the synthesis process of large area graphene, grown by Atmospheric Pressure Chemical Vapour Deposition technique and transferred on polyethylene terephthalate PET substrates. Quality assessments were confirmed by Scanning Electron Microscopy (SEM), Raman analysis and optical spectroscopy. Stability of the sheet resistance after 1500 bending tests of graphene /PET is demonstrated. Next, graphene was implemented as transparent conductive electrode in flexible devices: several graphene-based Polymer Dispersed Liquid Crystal (PDLC) devices have been fabricated and their electro-optical properties, such as voltage-dependent transmittance, response time and flexibility were measured and presented by video demonstrations. The obtained results open a great potential of graphene integration into the next generation ITO-free flexible and stretchable optoelectronics.