二维原子晶体材料中的各向异性研究概述

发布时间：2018-11-15 08:14

【摘要】：二维原子晶体材料简称二维材料,因载流子迁移和热量扩散都被限制在二维平面内,展现出了许多奇特的性质而受到了广泛关注。二维材料的带隙可调特性在场效应管、光电器件、热电器件等领域应用广泛。另外二维材料的自旋自由度和谷自由度的可控性使得二维材料在自旋电子学和谷电子学等领域也引发了深入的研究。不同的二维材料由于晶体结构的特殊性质导致了不同的电学特性或者光学特性的各向异性,包括拉曼光谱、光致发光光谱、二阶谐波谱、光吸收谱、热导率、电导率等性质的各向异性。这些各向异性特性在偏振光电器件、偏振热电器件、仿生器件、偏振光探等领域拥有巨大的发展潜力。二维材料的各向异性还能够用于实现器件性能的最优化。文章介绍了各种二维材料的各向异性的最新研究进展。
[Abstract]:Two-dimensional atomic crystal materials, short for two-dimensional materials, due to carrier transport and heat diffusion are confined in the two-dimensional plane, showing a lot of strange properties, so it has been paid more and more attention. Field effect transistors, optoelectronic devices, thermoelectric devices and so on are widely used in two-dimensional materials. In addition, the spin degree of freedom and the controllability of valley degree of freedom of two-dimensional materials also lead to further research in the fields of spin electronics and valley electronics. Due to the special properties of the crystal structure, different two-dimensional materials have different anisotropy of electrical or optical properties, including Raman spectra, photoluminescence spectra, second-order harmonic spectra, optical absorption spectra, thermal conductivity. Anisotropy of conductivity and other properties. These anisotropic properties have great potential in the fields of polarization optoelectronic devices, polarized thermoelectric devices, bionic devices, polarized light detection and so on. Anisotropy of two-dimensional materials can also be used to optimize device performance. This paper introduces the latest research progress of anisotropy of various two-dimensional materials.
【作者单位】：华中科技大学光学与电子信息学院华中科技大学创新研究院;
【基金】：国家自然科学基金面上项目(51572096) 中组部“千人计划”青年项目华中科技大学启动资金
【分类号】：O73

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