臺灣博碩士論文加值系統

本論文藉由超聲波震盪法將微米級MoS2粉末製備成MoS2奈米粒子分散液，並進行光學量測得知其光學特性。本論文選用之分散液溶劑為NMP，NMP被認為具有與MoS2較接近的表面能量，使製備出之分散液具有良好的穩定性。再來我們對於MoS2分散液進行EDX、SEM、TEM的量測，並觀測MoS2奈米粒子的大小與分散液形貌的關係，這裡觀測到隨著粒子尺寸增大分散液的色澤會朝向長波長移動。由於MoS2奈米粒子尺寸 < 100 nm時具有光致發光的特性，因此我們對於所製備之樣本使用325nm波長之He-Cd雷射進行激發並成功獲得相應產生的光源，而在拉曼量測部分可以觀測到合成出之奈米粒子具有特徵峰值可以驗證其材料特性。接著使用本實驗室研發之超頻譜影像技術對於光學顯微鏡影像進行量測，並獲得相應的波長頻譜得知其表面形貌狀態。並在最後進行了動態光散射(DLS)的方法量測分散液中粒子的水力半徑得知分散液中的粒子大小。本論文經由這些驗證，最終證實了此製程經由超聲波震盪時間與離心時間參數的調整，製備不同大小的MoS¬2的奈米粒子分散液，且觀察不同粒徑MoS2奈米粒子被激發光波長的光致發光特性。

In this paper, micron-sized MoS2 powder was prepared into MoS2 nanoparticle dispersion by ultrasonic method, and the optical properties were measured by optical measurement. The dispersion solvent chosen for this paper is NMP, NMP is considered to have the surface energy close to MoS2, and the prepared dispersion has good stability. Then we measured the EDX, SEM and TEM for the MoS2 dispersion and observed the relationship between the size of the MoS2 nanoparticles and the morphology of the dispersion. It was observed that the color of the dispersion would increase toward the long wavelength mobile. Since the MoS2 nanoparticles have a characteristic of photoluminescence at <100 nm, we use the He-Cd laser with a wavelength of 325 nm to excite and obtain the corresponding light source for the prepared samples. In the Raman measurement section It can be observed that the synthesized nanoparticles have characteristic peaks to verify their material properties. Then use the ultra-spectral imaging technology developed by our laboratory to measure the optical microscope image and obtain the corresponding wavelength spectrum to know its surface morphology. And the final method of dynamic light scattering (DLS) was used to measure the particle size of the particles in the dispersion. Based on these tests, it is proved that this process can be prepared by adjusting the ultrasonic oscillation time and centrifugal time parameters, and can be prepared in different sizes of MoS2 nanoparticle dispersion and have different particle size MoS2 nanoparticles excited light wavelength of the photoluminescence characteristics.

目錄
致謝
摘要
Abstract
目錄
圖目錄
第一章 緒論
1-1 前言
1-2 二維材料MoS2的介紹
1-3 MoS2量子點的發展與應用
1-4 MoS2量子點的製程簡介
1-5 研究動機與目的
1-6 論文架構
第二章 理論基礎
2-1 二硫化鉬簡介
2-1-1 二硫化鉬的物理特性
2-1-2 二硫化鉬的基本化學特性
2-2 二硫化鉬的製備方法
2-2-1 二硫化鉬製程分類
2-2-2 二硫化鉬合成法方法介紹
2-3 二硫化鉬的用途
2-4 實驗製程應用技術介紹
2-4-1 超聲波剝離法介紹
2-4-2 滴鑄法(Drop-Casting method)
2-4-3 基板親水機制(食人魚洗液洗滌)
2-4-4 基板親水機制(氧電漿改性基板)
2-5 多頻譜技術應用介紹
第三章 實驗步驟及方法
3-1 實驗材料及藥品規格
3-2 實驗流程及步驟
3-2-1 基板表面改性處理
3-2-2 MoS2研磨前置作業
3-2-3 MoS2真空乾燥作業
3-2-4 MoS2乾燥後重新分散至溶劑中
3-2-5 探針式超聲波剝離MoS2粒子
3-2-6 超聲波震盪後續處理
3-2-7 重力離心分離MoS2粒子
3-2-8 分散液製作量測樣本
3-3 實驗儀器及裝置
3-3-1 探針式超聲波震盪儀
3-3-2 離心機
3-3-3 氧氣電漿氧化系統
3-3-4 循環式烘箱系統
3-4 分析儀器
3-4-1 場發射掃描式電子顯微鏡(SEM)
3-4-2 螢光光譜儀(Fluorescence Spectrometers)
3-4-3 飛秒拉曼光譜分析儀(ft-Raman spectrometer)
3-4-4 穿透式電子顯微鏡(TEM)
3-4-5 能量色散X射線光譜儀(EDS)
3-4-6 動態光散射儀(DLS)
第四章 結果與討論 7
4-1 MoS2的表面形貌探討
4-1-1 MoS2奈米粒子樣本樣貌觀測
4-1-2 MoS2奈米粒子的熱聚合
4-1-3 MoS2奈米粒子EDS量測
4-1-4 MoS2粒子的穿透式電子顯微鏡(TEM)量測
4-2 MoS2奈米粒子的光學量測
4-2-1 MoS2分散液滴鑄至矽基板的光學顯微鏡觀測
4-2-2 分散液的光學特性觀測
4-2-3 MoS2奈米粒子的動態光散射(DLS)的量測探討
4-2-4 MoS2奈米粒子的拉曼光譜量測與探討
4-2-5 MoS2分散液的吸收頻譜量測與探討
4-2-6 MoS2超頻譜影像技術應用量測
4-2-7 MoS2奈米粒子的光致發光(PL)量測
第五章 結論與未來展望
第六章 參考文獻

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