• 文献标题:   BODIPY-based conjugated polymer covalently grafted reduced graphene oxide for flexible nonvolatile memory devices
  • 文献类型:   Article
  • 作  者:   SUN S, ZHUANG XD, WANG LX, LIU B, ZHANG B, CHEN Y
  • 作者关键词:  
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:   East China Univ Sci Technol
  • 被引频次:   11
  • DOI:   10.1016/j.carbon.2017.02.034
  • 出版年:   2017

▎ 摘  要

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.