All-printed and highly stable organic resistive switching device based on graphene quantum dots and polyvinylpyrrolidone composite

• All printed and highly stable ORSD based on G-QDs and PVP composite was proposed.
• Fabricated through cost effective EHD technique.
• Set/reset voltage of the devices is ±1.8 V, 500 endurance cycles.
• Bendability down to 8 mm diameter for 1000 cycles.

We propose all printed and highly stable organic resistive switching device (ORSD) based on graphene quantum dots (G-QDs) and polyvinylpyrrolidone (PVP) composite for non-volatile memory applications. It is fabricated by sandwiching G-QDs/PVP composite between top and bottom silver (Ag) electrodes on a flexible substrate polyethylene terephthalate (PET) at ambient conditions through a cost effective and eco-friendly electro-hydrodynamic (EHD) technique. Thickness of the active layer is measured around 97 nm. The proposed ORSD is fabricated in a 3 × 3 crossbar array. It operates switching between high resistance state (HRS) and low resistance state (LRS) with OFF/ON ratio ∼14 for more than 500 endurance cycles, and retention time for more than 30 days. The switching voltage for set/reset of the devices is ±1.8 V and the bendability down to 8 mm diameter for 1000 cycles are tested. The elemental composition and surface morphology are characterized by XPS, FE-SEM, and microscope.

Figure optionsDownload as PowerPoint slide