High-Performance Resistance-Switchable Multilayers of Graphene Oxide Blended with 1,3,4-Oxadiazole Acceptor Nanocomposite

Micromachines
Lei Li, Guangming Li

Abstract

Graphene oxide (GO) has been actively utilized in nonvolatile resistive switching random access memory (ReRAM) devices due to solution-processability, accessibility for highly scalable device fabrication for transistor-based memory, and cross-bar memory arrays. Uncontrollable oxygen functional groups of GO, however, restrict its application. To obtain stable memory performance, 2-tert-butylphenyl-5-biphenyl-1,3,4-oxadiazole (PBD) a that can serve as 1,3,4-oxadiazole acceptor was carefully introduced onto the GO framework. Better stability was achieved by increasing the weight ratio of the chemical component from 2:1 to 10:1 in all GO-based solutions. Particularly, rewritable nonvolatile memory characteristics were dependent on the ratio between PBD and GO. PBD:GO devices with a proportion of 10:1 w/w exhibited better memory performance, possessed a higher ON/OFF ratio (>10²) at a lower switching voltage of -0.67 V, and had a long retention ability. The interaction between PBD and GO can be demonstrated by transmission electron microscope, scanning electron microscope, thermogravimetric analysis, fourier transform infrared spectra, Raman spectra, X-ray diffraction, and fluorescence spectra. The superior ReRAM properties of the m...Continue Reading

References

Dec 7, 2011·Chemical Communications : Chem Comm·Prasenjit BhuniaHyoyoung Lee
Mar 24, 2012·Chemical Communications : Chem Comm·Changhua JinHyoyoung Lee
Aug 15, 2012·ACS Nano·Sung Min KimKang L Wang
Feb 14, 2014·Chemical Communications : Chem Comm·Ying-Hsuan ChouWen-Chang Chen
Oct 4, 2014·Nanoscale Research Letters·Jagan Singh MeenaTseung-Yuen Tseng

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X-ray
infrared spectroscopy

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