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研究生: 丘全煥
Chiu, Chuan-Huan
論文名稱: 含雙發光層之高效率橘色磷光有機發光二極體
High-Efficiency Phosphorescent Orange Organic Light-Emitting Diode with Double Emission Layers
指導教授: 周卓煇
Jou, Jwo-Huei
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 材料科學工程學系
Materials Science and Engineering
論文出版年: 2009
畢業學年度: 97
語文別: 中文
論文頁數: 68
中文關鍵詞: 有機發光二極體雙發光層
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  • 本研究利用雙發光層結構,成功製造出一高效率橘色磷光有機發光二極體;第一發光層使用之主體材料為2,7-Bis(9-carbazolyl)-9,9- spirobifluorene (Spiro-2CBP)、第二發光層使用之主體材料4,4’-Bis(9-carbazolyl)-biphenyl (CBP),兩層發光層都摻雜4 wt%的橘光染料Tris(2-phenylquinoline)iridium(III) (Ir(2-phq)3);當第一與第二發光層的厚度分別為19與5 nm時,元件效能最佳,在亮度100 cd/m2下,能量效率為29.5 lm/W,CIE1931色座標為(0.56, 0.44);此元件之高效率可歸因於適當的能階結構設計,此能階結構具有以下兩項優點:(一)激子傾向於主體材料上形成,再藉由能量傳遞的方式,傳導到客體,同時較少的激子在客體形成,也避免了過多激子在主體上累積,所造成的淬熄現象(二)可使載子於Spiro-2CBP:Ir(2-phq)3/CBP:Ir(2-phq)3界面再結合,形成激子,再經由能量轉移,將激子能量,向兩邊的發光層傳遞,使得大部分激子能量被傳遞給客體,而非無染料摻雜的傳輸層。


    摘要 I 獻 II 致謝 III 目錄 IV 表目錄 V 圖目錄 VII 壹、緒論 1 貳、文獻回顧 3 2-1、有機發光二極體的歷史發展 3 2-2、發光原理 11 2-3、橘、紅光有機發光二極體之發展 21 2-4、含雙發光層有機發光二極體之發展 22 參、實驗方法 24 3-1、材料 23 3-2、元件之電路設計與製作流程 25 3-3、基材清洗 27 3-4、主體與發光染料溶液之配製 28 3-5、旋轉塗佈 28 3-6、蒸鍍源之製備 28 3-7、蒸鍍裝置 29 3-8、蒸鍍速率之測定與校正 30 3-9、有機層的製備 31 3-10、負電極的製備 32 3-11、元件電流、電壓與亮度特性量測 32 3-12、發光效率之計算 32 3-13、電致發光光譜之量測 34 肆、結果與討論 35 4-1、以濕式製程製備橘色磷光有機發光二極體 35 4-1-1、以CBP為主體材料製備橘色磷光有機發光二極體 34 4-1-2、以Spiro-2CBP為主體材料製備橘色磷光有機發光二極體 39 4-2、以乾式製程製備橘色磷光有機發光二極體 43 4-2-1、含CBP發光層厚度對元件之影響 43 4-2-2、含Spiro-2CBP發光層厚度對元件之影響 46 4-3、以乾式製程製備含雙發光層之橘色磷光有機發光二極體 49 4-3-1、發光層順序對雙發光層元件之影響 49 4-3-2、含Spiro-2CBP發光層厚度對雙發光層元件之影響 53 4-3-3、雙發光層厚度比例對元件之影響 57 伍、結論 63 陸、參考文獻 64

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