發(fā)布時間：2018-07-07 14:23

  本文選題：銅納米線陣列 + 光學(xué)特性��； 參考：《云南大學(xué)》2015年碩士論文

【摘要】：金屬納米結(jié)構(gòu)材料因具有優(yōu)異的光學(xué)、電學(xué)、熱學(xué)、磁學(xué)、力學(xué)性能成為人們關(guān)注的熱點(diǎn)。由于小尺寸效應(yīng)和特殊的空間結(jié)構(gòu),通過改變參數(shù)能夠很大程度地調(diào)配其局域表面等離激元模式來實現(xiàn)其物理特性的調(diào)制,因而在光子、電子以及光-電器件等領(lǐng)域有重要應(yīng)用。此論文主要實驗研究銅納米線陣列和納米泡沫金的光電特性。通過實驗測量的數(shù)據(jù)與塊體材料的進(jìn)行對比,進(jìn)一步了解納米結(jié)構(gòu)材料的光電性能及應(yīng)用前景。 目前,金屬納米線陣列在紅外波段的光學(xué)特性研究報道的比較少,因此,此論文第一階段主要研究了四種不同尺寸的銅納米線陣列在近紅外和中紅外波段的光學(xué)特性,對其光譜分析發(fā)現(xiàn)：樣品在中紅外波段表現(xiàn)出較強(qiáng)的局域表面等離激元(LSP)模式,且局域表面等離激元共振(LSPR)峰隨著樣品尺寸的變化發(fā)生了一定的漂移,而在近紅外波段并未出現(xiàn)類似效應(yīng)；近紅外波段的光學(xué)反射譜受樣品尺寸以及溫度的調(diào)控。第二階段主要研究了納米泡沫金在可見光波段的光學(xué)反射、吸收特性和光熒光特性。結(jié)果發(fā)現(xiàn)：樣品有兩個非常明顯的表面等離激元共振(SPR)吸收峰分別出現(xiàn)在520nm和696nm,且SPR吸收峰的位置隨著樣品密度的減少(空心微球尺寸不變)發(fā)生一定的紅移；樣品在可見光波段有一個較寬的光熒光峰出現(xiàn)在574nm,且光熒光峰的強(qiáng)度受樣品的尺寸和密度的調(diào)控。 我們希望,此論文中有趣的實驗現(xiàn)象和結(jié)果可以加深我們對金屬納米結(jié)構(gòu)材料光電特性的理解,為其在先進(jìn)的光、電以及表面等離子激元器件等領(lǐng)域的應(yīng)用提供科學(xué)的研究基礎(chǔ)。
[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.
【學(xué)位授予單位】：云南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB383.1

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本文編號：2105233