以時域有限差分法探討有機發光二極體之光學特性

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姓名

林中肯(Chung-Ken Lin) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

以時域有限差分法探討有機發光二極體之光學特性
(Finite-Difference Time-Domain for Optical Properties of Organic Light Emitting Devices)

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至系統瀏覽論文 (2025-1-14以後開放)

摘要(中)

本論文主要以時域有限差分法模擬有機發光二極體的光學頻譜。我們透過校正頻譜修正近場至遠場轉換所造成的模擬誤差，讓時域有限差分法模擬的遠場零度角光譜與即時性多角度光譜所量測的零度角光譜相符，以此証明時域有限差分法確實可模擬有機發光二極體的光學光譜。我們探討不同膜層厚度模擬Alq3元件遠場光譜，解釋在微共振腔中，廣角干涉效應對光譜所造成的影響，並運用時域有限差分法驗證此效應。在廣角干涉效應中，電偶極位置至金屬電極表面的距離(Lrec)為一個非常重要的參數，透過時域有限差分法模擬，我們推測電子電洞復合位置所產生的電偶極，應當為一區域範圍厚度復合。

摘要(英)

In this thesis, the finite-difference time-domain method is used to simulate the optical spectrum of organic light-emitting diodes. We correct the simulation error caused by near-field to far-field conversion by correcting spectrum, so that the far-field zero-degree angle spectrum is consistent with the finite-difference time-domain method and one-snap multi-angle spectroscopy optical system(OSAS). This proves that the finite-difference time-domain method can indeed simulate the optical spectrum of organic light-emitting diodes. We demonstrate the far-field spectra of simulated Alq3 components with different film thicknesses, explain the wide-angle interference effects on the weak micro-cavity effect, and verify this effect using the finite-difference time-domain method. In the wide-angle interference effect, the distance from the position of the electric dipole to the surface of the metal electrode(Lrec) is a very important parameter. Through simulation of the finite-difference time-domain method, we speculate that the electric dipole generated by the composite position of the electron and the hole should be in a region range.

關鍵字(中)

★ 時域有限差分法
★ 有機發光二極體
★ 廣角干涉效應

關鍵字(英)

★ Finite-Difference Time-Domain method
★ organic light emitting device
★ wide-angle interference

論文目次

中文摘要 ⅰ
英文摘要 ⅱ
謝誌 ⅲ
目錄 ⅳ
圖目錄 ⅵ
表目錄 ⅸ
一、緒論 1
1.1 前言 1
1.2 時域有限差分法 2
1.3 研究動機與目的 3
二、基礎理論 5
2.1 有機發光二極體 5
2.1.1 有機發光二極體結構與原理 5
2.1.2 電荷注入限制電流 6
2.1.3 空間電荷限制電流 8
2.1.4 發光機制 8
2.2 時域有限差分法的原理 11
2.2.1 有限差分法 11
2.2.2 馬克士威方程組 12
2.2.3 一維自由空間FDTD演算法 14
2.2.4 三維FDTD演算法 15
2.2.5 穩定性標準 20
2.3 近場到遠場的轉換 20
2.3.1 惠更思表面 21
2.3.2 頻域NF-FF轉換 23
2.4 改變遠場折射率 28
2.5 朗伯光源與朗伯餘旋定理 29
三、實驗方法與結構 31
3.1 實驗與量測儀器 31
3.1.1 超音波震盪器 31
3.1.2 熱蒸鍍機 31
3.1.3 手套箱 32
3.1.4 半導體參數分析儀 33
3.1.5 光纖量測系統 33
3.1.6 即時性多角度光譜量測系統 35
3.2 有機發光二極體之製程與結構 35
四、實驗結果與討論 38
4.1 NF-FF校正頻譜 38
4.2 Alq3單層膜光致發光 39
4.3 Alq3元件電致發光 40
4.3.1 零度角光譜 42
4.3.2 0∘,30∘,60∘光譜 42
4.3.3 總光強度分佈圖 43
4.4 不同厚度的Alq3與NPB膜層對元件電致發光影響 43
4.5 Alq3膜層厚度對元件電致發光影響 48
五、結論與未來展望 53
參考文獻 54

參考文獻

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指導教授

張瑞芬(Jui-Fen Chang)

審核日期

2020-1-16

推文