【摘要】：稀土離子由于電子層結(jié)構(gòu)十分獨(dú)特,能級(jí)眾多,從而成為一種理想的發(fā)光材料組合成分之一。這類發(fā)光材料的光學(xué)性能十分優(yōu)異,具備了強(qiáng)大的實(shí)際應(yīng)用潛力。氟化物基質(zhì)的物理化學(xué)特性十分穩(wěn)定,且聲子能量較低,是理想的發(fā)光材料基質(zhì)。稀土離子摻雜氟化物是目前比較常用的制作稀土發(fā)光材料的方案,比之以前的使用非氟化物基質(zhì)的性能要優(yōu)越。本文中所選擇的實(shí)驗(yàn)方案就是在氟化物基質(zhì)中摻入稀土離子。本實(shí)驗(yàn)室通過(guò)通過(guò)改進(jìn)后的布里奇曼法,也就是我們?cè)诤竺嫣岬降嫩釄逑陆捣ǔ晒χ苽涑隽讼⊥岭x子摻雜氟化物的單晶體。之后會(huì)將樣品加工成一個(gè)厚度在2mm左右的薄片,分別測(cè)量了這些薄片樣品的XRD衍射光譜、吸收光譜、激發(fā)光譜、發(fā)射光譜等,通過(guò)這些數(shù)據(jù)去分析晶體樣品的光學(xué)性能,并介紹其光學(xué)性能適合的一些實(shí)際應(yīng)用。論文的第一章中介紹了稀土發(fā)光材料的一些基本概念。對(duì)稀土發(fā)光材料有了一些基本認(rèn)識(shí)。接著列出了稀土發(fā)光材料在一些領(lǐng)域中的實(shí)際應(yīng)用。后面詳細(xì)介紹了稀土發(fā)光材料分別在固體紫外激光器和固體白光LED方面的應(yīng)用。論文的第二章主要介紹的是實(shí)驗(yàn)過(guò)程,還有所使用的一些理論基礎(chǔ)知識(shí)和儀器。其中理論知識(shí)包括了XRD衍射光譜、吸收光譜、發(fā)射光譜和熒光分析法,通過(guò)這些理論分析了樣品的光學(xué)特性。論文的第三章到第五章主要是介紹了幾種具體的實(shí)驗(yàn)成果:Ce3+摻雜α-Na YF4單晶體、Dy3+/Eu3+共摻α-Na YF4單晶體和Eu3+摻雜α-Na YF4單晶體。文章中介紹了制備用于實(shí)驗(yàn)樣品的化學(xué)成分的摩爾比,以及詳細(xì)的晶體生長(zhǎng)過(guò)程,通過(guò)測(cè)量樣品的一些表征參數(shù),來(lái)分析樣品的光學(xué)性能。通過(guò)了解它們的光學(xué)特性來(lái)判斷它們可以在一些領(lǐng)域的價(jià)值。文章的最后總結(jié)出了稀土離子摻雜氟化物的優(yōu)點(diǎn),總結(jié)了實(shí)驗(yàn)樣品的實(shí)際應(yīng)用的潛力。同時(shí)提出了實(shí)驗(yàn)中出現(xiàn)的不足之處,并對(duì)未來(lái)的發(fā)展進(jìn)行了展望。
[Abstract]:Rare earth ions have become one of the ideal composition of luminescent materials due to their unique structure and numerous energy levels. The optical properties of this kind of luminescent materials are very excellent and have strong practical application potential. The physical and chemical properties of fluoride matrix are very stable, and the phonon energy is low, so it is an ideal luminescent material matrix. Rare earth ion doped fluoride is a commonly used scheme to fabricate rare earth luminescent materials, which is superior to the previous non fluoride matrix. The experimental scheme chosen in this paper is to add rare earth ions into fluoride matrix. In our laboratory, rare earth ion doped fluorides were successfully prepared by the improved Bridgman method, that is, the crucible descent method. The samples will then be processed into a thin slice with a thickness of about 2mm. The XRD diffraction spectra, absorption spectra, excitation spectra, emission spectra, etc., of these thin samples will be measured, and the optical properties of the crystal samples will be analyzed through these data. Some practical applications suitable for its optical properties are also introduced. In the first chapter, some basic concepts of rare earth luminescent materials are introduced. Some basic knowledge of rare earth luminescent materials has been obtained. Then the practical applications of rare earth luminescent materials in some fields are listed. The applications of rare earth luminescent materials in solid state UV lasers and solid white LED are described in detail. The second chapter mainly introduces the experimental process and some basic theoretical knowledge and instruments used. The theoretical knowledge includes XRD diffraction spectrum, absorption spectrum, emission spectrum and fluorescence analysis, through which the optical properties of the samples are analyzed. In the third to fifth chapters, several specific experimental results are introduced, such as: ce _ 3 doped 偽 -Na YF4 single crystal and Eu3 doped 偽 -Na YF4 single crystal. In this paper, the molar ratio of the chemical components prepared for the experimental samples and the detailed crystal growth process are introduced. The optical properties of the samples are analyzed by measuring some characterization parameters of the samples. They can be valued in some fields by understanding their optical properties. Finally, the advantages of rare earth ion doped fluorides are summarized, and the practical application potential of experimental samples is summarized. At the same time, the shortcomings of the experiment are put forward, and the future development is prospected.
【學(xué)位授予單位】：寧波大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：O734;TN312.8

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