Journal
CARBON
Volume 116, Issue -, Pages 713-721Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2017.02.034
Keywords
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Funding
- National Natural Science Foundation of China [51333002, 21404037, 61378072, 51403126]
- Research Fund for the Doctoral Program of Higher Education of China [20120074110004]
- Fundamental Research Funds for the Central Universities [WJ1514311]
- Chenguang Program [15CG28]
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The data storage performance, stability and reliability of the graphene memories have advanced significantly towards practical information storage applications. Using highly dispersed 4-bromobenzene functionalized RGO (BB-RGO) as two dimensional template, a new poly[(1,4-diethynylbenzene)-alt-boron dipyrro-methene]-grafted reduced graphene oxide (PDBD-g-RGO) was synthesized via Sonogashira coupling reaction. Covalent grafting of PDBD onto BB-RGO gives rise to a 34-cm(-1) blue shift of the D band and a 7-cm(-1) red shift of the G band when compared to the Raman spectrum of BB-RGO. A transparent and flexible nonvolatile memory device with configuration of Al/PDBD-g-RGO/lTO-coated poly(ethylene terephthalate) (PET) exhibited typical storage performance of rewritable memory that can be electrically erased and reprogrammed, with turn-on and turn-off voltages of 1.55 and -1.80 V, and an ON/OFF current ratio exceeding 10(5). The memory behaviors of the flexible device were almost unchanged under the bending test. 2017 Elsevier Ltd. All rights reserved.
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