铜纳米线阵列以及泡沫金纳米结构材料的光电特性研究

发布时间：2018-07-07 14:23

本文选题：铜纳米线阵列 + 光学特性　；参考：《云南大学》2015年硕士论文

【摘要】：金属纳米结构材料因具有优异的光学、电学、热学、磁学、力学性能成为人们关注的热点。由于小尺寸效应和特殊的空间结构,通过改变参数能够很大程度地调配其局域表面等离激元模式来实现其物理特性的调制,因而在光子、电子以及光-电器件等领域有重要应用。此论文主要实验研究铜纳米线阵列和纳米泡沫金的光电特性。通过实验测量的数据与块体材料的进行对比,进一步了解纳米结构材料的光电性能及应用前景。目前,金属纳米线阵列在红外波段的光学特性研究报道的比较少,因此,此论文第一阶段主要研究了四种不同尺寸的铜纳米线阵列在近红外和中红外波段的光学特性,对其光谱分析发现：样品在中红外波段表现出较强的局域表面等离激元(LSP)模式,且局域表面等离激元共振(LSPR)峰随着样品尺寸的变化发生了一定的漂移,而在近红外波段并未出现类似效应；近红外波段的光学反射谱受样品尺寸以及温度的调控。第二阶段主要研究了纳米泡沫金在可见光波段的光学反射、吸收特性和光荧光特性。结果发现：样品有两个非常明显的表面等离激元共振(SPR)吸收峰分别出现在520nm和696nm,且SPR吸收峰的位置随着样品密度的减少(空心微球尺寸不变)发生一定的红移；样品在可见光波段有一个较宽的光荧光峰出现在574nm,且光荧光峰的强度受样品的尺寸和密度的调控。我们希望,此论文中有趣的实验现象和结果可以加深我们对金属纳米结构材料光电特性的理解,为其在先进的光、电以及表面等离子激元器件等领域的应用提供科学的研究基础。
[Abstract]:Metal nanostructured materials have attracted much attention due to their excellent optical, electrical, thermal, magnetic and mechanical properties. Because of the small size effect and special spatial structure, the modulation of physical properties can be realized by changing the parameters to a large extent, so that the photons can be modulated. Electronic and optical-electrical parts and other fields have important applications. In this paper, the photoelectric properties of copper nanowire arrays and gold nanoparticles are studied experimentally. By comparing the measured data with the bulk materials, the photoelectric properties and application prospects of nanostructured materials are further understood. At present, there are few reports on the optical properties of metal nanowire arrays in infrared band. Therefore, in the first stage of this paper, the optical properties of four kinds of copper nanowire arrays with different sizes in near-infrared and mid-infrared bands are studied. It is found that the sample exhibits a strong local surface isoexciton (LSP) mode in the mid-infrared band, and the local surface isoexciton resonance (LSPR) peak drifts with the change of the sample size. But there is no similar effect in the near infrared band, and the optical reflection spectrum in the near infrared band is controlled by the size of the sample and the temperature. In the second stage, the optical reflection, absorption and photoluminescence characteristics of nano-gold foam in the visible band are studied. The results show that there are two apparent surface isoexciton resonance (SPR) absorption peaks in 520nm and 696 nm, respectively, and the positions of SPR absorption peaks shift to a certain extent with the decrease of sample density (the size of hollow microspheres remains unchanged). There is a wide photoluminescence peak at 574nm in the visible band, and the intensity of the photoluminescence peak is controlled by the size and density of the sample. We hope that the interesting experimental phenomena and results in this paper will deepen our understanding of the photoelectric properties of metal nanostructured materials for their advanced light. The applications of electrical and surface plasma-stimulated components provide a scientific basis for research.
【学位授予单位】：云南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.1

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