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研究生：	林銘偉 Lin, Min-wei
論文名稱：	連結界面於疊層式白光有機二極體元件之研究 The studies of charge-generation junction in tandem-type white-emissive organic/polymer light-emitting diodes
指導教授：	郭宗枋 Guo, Tzung-Fang
學位類別：	碩士 Master
系所名稱：	理學院 - 光電科學與工程研究所 Institute of Electro-Optical Science and Engineering
論文出版年：	2008
畢業學年度：	96
語文別：	中文
論文頁數：	130
中文關鍵詞：	疊層式白光有機二極體元件、面射型元件
外文關鍵詞：	white color, OLED, Tandem-type
相關次數：	點閱：61 下載：2
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於本篇論文之研究，我們以Polyethylene oxide(PEO)/Al/
molybdenum oxide(MoO3)此結構串聯藍光小分子元件及黃光高分子元件，製做出串聯式白光有機元件，元件亮度表現為13,079 cd/m2、效率表現為3.77 cd/A、頻譜涵蓋從400 nm到750 nm、CIE值為(0.31, 0.33)且演色性值(CRI)高達88。為了進一步了解連接單元Polyethylene oxide(PEO)/Al/molybdenum oxide(MoO3)在串聯式元件中的作用，我們從材料跨壓、光穿透現象去分析連接單元載子注入與傳輸的狀況，發現Polyethylene oxide(PEO)/Al雖其本身具有幫助電子注入至高分子黃光發光層的功效，但亦會阻擋電洞注入上半部藍光元件，且由光穿透量測發現光穿透度會隨金屬Al厚度增加而減低，針對上述兩問題，提出以Polyethylene oxide(PEO)/Al製備為連接單元中電子注入層雖已可製做出高純度白光元件，但欲使黃光及藍光元件能藉由此組連接單元的連結而有相加的成果，需針對Polyethylene oxide(PEO)/Al作製程方式或材料改善。
本論文另外將下射型串聯式白光元件改製作為面射型串聯式元件，利用面射型結構所具有的微共振腔效應，改變共振腔長度，將白光元件在不使用color filter的情況下，製作紅、藍、綠飽和的三原色元件，此部分想法目前為藉由模擬驗證其可行性。

In this work, we studies the charge-generation junction in tandem-type white-emissive organic/polymer light-emitiing diodes. The tandem devices are made of stacking a yellow-emissive phenyl-
substituted poly(para-phenylene vinylene) copolymer-based PLED with a blue-emissive OLED and applying the organic oxide/Al/
molybdenum oxide (MoO3) complex structure as the connecting or chare generation layer (CGL).In the tandem type structure, there are two criteria for the formation of an intermediate connector that has good performance. One criterion is that there is no carrier-injection barrier in the intermediate connector and its related interfaces, and the other criterion is that the intermedia-
te connector should have high optical transparency in the visible spectral range. To examine the carrier injection barrier at Al/
molybdenum oxide (MoO3) and organic oxide/Al interface, we found lot voltage drop cross the organic oxide and Al layer, it means the intermediate connector of organic oxide/Al exhibits bad condi-
tion for carrier injection and transport. Furthermore, the optical spectrum of different thickness of Al shows the optical transparen-
cy intensity decrease with the higher thickness of Al.
The white-emission has high color rending index (~88), having broad free space emission spectrum spanning the range of 350 to 800 nm, so we studies the control of light emission from the tandem-type organic/polymer light-emitting diodes using a microc-
avity structure. Changing cavity length, in same device structure and under no color filter making white color can modify by microcav-
ity effect to red, green and blue color. In this part, we use optical simulation program to realize our ideas.

中文摘要....................................................Ⅰ
英文摘要....................................................Ⅱ
致謝........................................................Ⅳ
目錄........................................................Ⅴ
表目錄......................................................Ⅸ
圖目錄......................................................Ⅹ
第一章 緒論...............................................1
1-1 前言..................................................1
1-2 有機發光元件之發展與應用..............................2
1-3 操作原理..............................................6
1-3-1 OLED的結構與原理....................................6
1-3-2 有機發光二極體之材料發展近況.......................11
1-3-3 OLED與PLED之比較 ..................................14
1-4 全彩有機發光二極體之元件結構與製程技術...............17
1-4-1 發光顏色...........................................17
1-4-2 OLED全彩化技術.....................................21
1-5 串聯式有機元件之討論.................................27
1-6 面射型OLED元件之討論.................................30
1-7 研究動機與大綱.......................................32
1-7-1 研究動機...........................................32
1-7-2 研究大綱...........................................33

第二章 實驗方法與步驟....................................35
2-1 元件製作流程簡介.....................................35
2-2 ITO玻璃基板處理......................................36
2-2-1 ITO玻璃基板圖案化..................................36
2-2-2 ITO表面修飾........................................39
2-3 元件製作.............................................39
2-3-1 單層元件製作.......................................39
2-3-2 下射型串聯式白光元件(Tandem device)之製作..........45
2-3-3 面射型單層OLED元件(top-device) ....................47
2-3-4 面射型串聯式白光元件(top-Tandem device)之製作......49
2-4 元件光電特性量測.....................................51
2-5 X-ray光電子能譜儀量測................................51
2-5-1 X-ray光電子能譜儀原理..............................51
2-5-2 儀器裝置系統.......................................53
第三章 串聯式白光有機元件之製作與連接單元之探討..........55
3-1 前言.................................................55
3-2 串聯式白光有機元件之製作與光電特性量測...............61
3-3 串聯式白光有機元件連接單元之探討 ....................64
   3-3-1 連接單元中PEO/Al對電子注入下部黃光元件及MoO3對電洞注入上部藍光元件功效之實驗證據...........................69
   3-3-2 連接單元對元件損耗之影響........................74
3-4 結論.................................................89

第四章 串聯式白光有機元件連接單元之改善..................93
4-1 前言.................................................93
4-2 PEO與Al以共蒸鍍方式成膜..............................93
4-2-1 XPS分析............................................94
4-2-2 UPS量測...........................................100
4-3 結論與未來研究重點..................................102

第五章 面射型串聯式白光有機元件之製作與探討.............104
5-1 前言................................................104
5-2 面射型串聯式白光有機元件之製作與光電特性量測........105
5-3 模擬模型架設與模擬結果..............................113
   5-3-1 模擬模型架設...................................116
   5-3-2 模擬結果.......................................119
5-4 結論................................................123

第六章 總結與未來工作建議...............................124
參考文獻................................................126
                                    

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校內：2013-07-16公開
校外：2018-07-16公開

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