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首页> 外文期刊>RSC Advances >Preparation and flash memory performance based on fluorene-triphenylamine copolymer (PF-TPA)/MWCNTs
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Preparation and flash memory performance based on fluorene-triphenylamine copolymer (PF-TPA)/MWCNTs

机译：基于芴 - 三苯胺共聚物（PF-TPA）/ MWCNT的制备和闪存性能

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摘要

A conjugated alternating polymer based on fluorene and triphenylamine, namely poly[(9,9-dioctyl)-2,7-fluorene-co-triphenylamine] (PF-TPA), in which triphenylamine (TPA) as electron donor and hole transporting group was devised and synthesized on the basis of the Suzuki coupling method. The structural properties of the copolymer can be verified by Fourier transform infrared (FT-IR) spectroscopy, hydrogen and carbon nuclear magnetic resonance (H-1-NMR, C-13-NMR). Nonvolatile memory devices with bistable electrical switching behavior were observed based on active layers of both fluorene-triphenylamine copolymer (PF-TPA) and PF-TPA: carbon nanotubes (CNTs) hybrid composite materials. Typical formed composite-based device with sandwich configuration, indium tin oxide (ITO)/PF-TPA: CNTs/Al, was demonstrated superior rewritable flash memory property compare to the ITO/PF-TPA/Al device with a greater ON/OFF state current ratio. In addition, the optimal storage characteristics occurs when the doping concentration of CNTs was at a certain value (CNTs = 0.3 mg mL(-1)), which leading to the ON/OFF state current ratio added up to 2 orders of magnitude and the switching threshold voltage reduced prominently. The conductance switching mechanism of devices was also further discussed. After testing, the devices have good stability and durability, which have a potential application value in data storage.
机译：基于芴和三苯胺的共轭交替聚合物，即聚[（9,9-二辛基）-2,7-芴 - 共三苯胺]（PF-TPA），其中三苯胺（TPA）作为电子供体和空穴传输组在铃木耦合方法的基础上设计和合成。通过傅里叶变换红外（FT-IR）光谱，氢气和碳核磁共振（H-1-NMR，C-13-NMR）可以验证共聚物的结构性质。基于芴 - 三苯胺共聚物（PF-TPA）和PF-TPA：碳纳米管（CNT）杂化复合材料的活性层观察具有双稳态电切换行为的非易失性存储器件。典型的形成复合材料与夹层配置，氧化铟锡（ITO）/ PF-TPA：CNTS / Al，被证明了与ITO / PF-TPA / AL器件相比的优异可重写闪存属性，具有更大的开/关状态目前的比例。另外，当CNT的掺杂浓度处于一定值时，发生最佳存储特性（CNT = 0.3mg ml（-1）），这导致ON / OFF状态电流比最多增加2个数量级和切换阈值电压突出减少。还进一步讨论了装置的电导切换机构。在测试之后，该设备具有良好的稳定性和耐用性，其在数据存储中具有潜在的应用值。

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  • 来源
    《RSC Advances》 |2017年第86期|共10页
  • 作者

    Yang Qun; Jiang Xiankai; Xin Ying; Zhao Xiaofeng; Huang Jiahe; Wang Shuhong; Zheng Rongrong; Ma Dongge; Wang Cheng;

  • 作者单位

    Heilongjiang Univ Key Lab Funct Inorgan Mat Chem Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Key Lab Funct Inorgan Mat Chem Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Key Lab Funct Inorgan Mat Chem Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Sch Elect Engn Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Key Lab Funct Inorgan Mat Chem Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Key Lab Funct Inorgan Mat Chem Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Univ Sch Chem Engn &

    Mat Harbin 150080 Heilongjiang Peoples R China;

    South China Univ Technol Sch Mat Sci &

    Engn Guangzhou 510640 Guangdong Peoples R China;

    Heilongjiang Univ Key Lab Funct Inorgan Mat Chem Harbin 150080 Heilongjiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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