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溶液处理的基于石墨烯的薄膜中的三维电荷传输:一个多尺度分析

Alex Boschi1,2, Alessandro Kovtun1, Fabiola Liscio3

  • 1Consiglio Nazionale delle Ricerche, Istituto per la Sintesi Organica e la Fotoreattività, (CNR-ISOF), via Gobetti 101, Bologna, 40129, Italy.

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概括

这项研究揭示了石墨烯和相关的二维材料 (GRM) 薄膜在金属绝缘体过渡附近的电荷传输机制. 一个通用模型解释了无序的范德瓦尔斯膜中的运输,通过在介面镜粒之间跳跃.

关键词:
范德瓦尔斯的薄膜薄膜.运输费 运输费 运输费 运输费混乱的系统是无序的系统.石墨烯是一种石墨烯.阶段过渡 阶段过渡局部化的局部化很弱.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 凝聚物质物理学 凝聚物质物理学
  • 纳米技术 纳米技术

背景情况:

  • 石墨烯和相关的二维材料 (GRM) 薄膜由于其复杂的二维纳米片的3D组装而表现出不同的电气性能.
  • 了解这些无序系统中的电荷运输 (CT) 对其应用至关重要.

研究的目的:

  • 在金属绝缘体过渡 (MIT) 附近的GRM薄膜中研究电荷传输机制.
  • 为了突出缺陷密度和纳米板布局对电气特性的影响.
  • 在无序的范德瓦尔斯薄膜中开发CT的一般模型.

主要方法:

  • 两种GRM类型的比较:减少的氧化石墨烯和电化学剥皮的石墨烯片.
  • 研究结构,形态和电导率对温度,噪声和磁场的依赖.
  • 开发一个多尺度的收费运输模型.

主要成果:

  • 识别出缺陷密度和局部纳米板排列在控制CT中的独特作用.
  • 建立了一个概括模型,将CT描述为在介面镜颗粒 (块) 之间跳跃.
  • 证明了该模型对混乱的范德瓦尔斯薄膜的适用性.

结论:

  • 缺陷密度和结构组织是GRM薄膜导电性的关键因素.
  • 一个基于中视镜跳跃的统一模型为理解这些材料中的CT提供了一种通用方法.
  • 这项工作为为电子应用量身定制GRM属性提供了洞察力.