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研究生: 林子文
Lin, Tzu-Wen
論文名稱: 矽量子點之光電特性研究
Study on Silicon Quantum Dots for Optoelectronic Properties
指導教授: 胡淑芬
Hu, Shu-Fen
學位類別: 碩士
Master
系所名稱: 物理學系
Department of Physics
論文出版年: 2012
畢業學年度: 100
語文別: 中文
論文頁數: 107
中文關鍵詞: 矽量子點光致螢光電致螢光低壓化學氣相沉積
英文關鍵詞: silicon quantum dot, photoluminescence, electroluminescence, LPCVD
論文種類: 學術論文
相關次數: 點閱:72下載:0
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  • 本實驗之矽量子點以低壓化學沉積氣相系統LPCVD(low pressure chemical vapor deposition)製備,利用調控制SiH2Cl2 及NH3兩種氣體流量成長氮化矽之薄膜,並固定其厚度,再單純通以SiH2Cl2調控沉積時間成長不同大小之三明治結構矽量子點,並由穿透式電子顯微鏡TEM(transmission electron microscopy)影像證實不同沉積時間之下量子點存在於材料中,並後續將材料於1100˚C常壓氮氣下退火2小時。進而利用低略角X光繞射GIXRD (grazing incidence X-Ray diffraction)鑑定材料中退火前後之結晶晶相並利用Scherrer formula推算不同結晶相之平均量子點晶粒大小。再者利用Raman光譜鑑定其退火前後材料中是否有奈米結晶存在。並利用光致螢光光譜PL(photoluminescence)觀測量子點退火前後發光波段及利用Park經驗公式推算可能含有之量子點大小,並利用1931 CIE color space鑑別材料之混和色光。
    最後將基板上之量子點材料切割製作成電致螢光EL(electroluminescence) 發光元件並利用積分球量測其退火前後之元件EL光譜圖發光波段及發光強度且亦利用1931 CIE color space鑑別元件所發出之混和色光座標。

    摘要 I 圖目錄 IV 表目錄 X 第一章 緒論 1 1.1 簡介 1 1.2 常見量子點應用 2 1.3 研究動機及目的 6 第二章 基本理論 9 2.1 薄膜沉積原理簡介 9 2.2 量子點之特性及原理簡介 11 第三章 實驗流程及檢測技術 21 3.1 矽量子點製備實驗流程 23 3.1.1 低壓化學氣相沉積系統製備矽量子點 23 3.2 矽量子點檢測技術 31 3.2.1 穿透式電子顯微鏡影像鑑定;TEM 31 3.2.2 薄膜X光繞射晶相鑑定;XRD 34 3.2.3 光致螢光放射系統;PL 39 3.2.4 拉曼光譜檢測技術;Raman 43 3.2.5 電致螢光放射系統;EL 46 第四章 實驗結果與討論 52 4.1 矽量子點成長機制 52 4.2 矽量子點分析技術檢測結果 54 4.2.1 穿透式電子顯微鏡影像分析;TEM 54 4.2.2 低略角薄膜X光繞射晶相鑑定分析;GIXRD 66 4.2.3 拉曼光譜分析;Raman spectrum 72 4.2.4 光致螢光光譜;PL spectrum 74 4.2.5 電致螢光光譜;EL spectrum 84 第五章 結論 98 參考文獻 100

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