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Mussel-Inspired Polydopamine Coating for Flexible Ternary Resistive Memory.
Chem Asian J. 2018 May 14;:
Authors: Zhao YY, Cheng XF, Qian WH, Zhou J, He JH, Li H, Xu QF, Li NJ, Chen DY, Lu JM
Abstract
In recent years, numerous organic molecules and polymers carrying various functional groups were synthesized and used in fabrication of wearable electronic devices. Compared to previous materials suffer from poisonousness, stiffness and complex film fabrication, we circumvent above matters by taking advantage of mussel-inspired polydopamine as our active material to realize random resistive access memories (RRAMs). Polydopamine thin film were grown on indium tin oxide glass catalyzed by Cu2SO4/H2O2 and characterized by Fourier infrared spectroscope (FT-IR), Ultra-violet (UV-Vis) and scanning electron microscope. The Al/Polydopamine film/ITO devices perform ternary memory behaviour with good ternary device yield with two threshold voltages around 1.50 V and 3.50 V, long data retention over 104 s of continuous reading 104 pulse reading. Two resistance switching are attributable to the defects functioning as charge traps and the formation of conductive filaments. Flexible device based on Al/Polydopamine film/ITO/ Polyethylene terephthalate retains its ternary memory behaviour after being bended with bending radius of 1.54 cm and bending cycles up to 5000, demonstrating good compatibility and flexibility of polydopamine.
PMID: 29756306 [PubMed - as supplied by publisher]