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研究生： 傅聖卿
Fu, Sheng-Ching
論文名稱： 根基於可濕製銥錯合物黃光OLED
Solution-Process Feasible Iridium Complex Based Yellow OLED
指導教授： 周卓煇
Jou, Jwo-Huei
口試委員: 王欽戊
Wang, Ching-Wu
薛景中
Shyue, Jing-Jong
金志龍
Chin, Chih-Lung
蔡永誠
Tsai, Yung-Cheng
岑尚仁
Chen, Sun-Zen
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： 2017
畢業學年度： 105
語文別： 中文
論文頁數： 111
中文關鍵詞： 有機發光二極體 、高效率黃光 、平衡的載子注入 、退黑激素抑制 、視網膜曝照極限
外文關鍵詞： Organic Light-Emitting Diode, Highly Efficient Yellow Emitter,, Balanced Carrier Injection, Maximum Permissible Exposure-Limit, Melatonin Suppression Sensitivity
相關次數： 點閱：2  下載：0 
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    • 黃光在顯示和照明的應用中扮演了關鍵的角色，其可應於高品質RGBY顯示器和生理友善的低色溫照明的製作；對於有機發光二極體(Organic Light Emitting Diode, OLED)技術而言，連續滾印可應用於製作低成本大面積的元件；研發出一個具有可濕製特性的高效率黃光染料，便成重要；因此，本研究利用一新穎黃色磷光含銥錯合物bis[5-methyl-7-fluoro-8-trifluoromethyl-5H-benzo(c)(1,5)naphthyridin -6-one]iridium (picolinate) (FCF3BNO)，探討其濕製的可行性；所得元件，在亮度為1,000 cd/m2時，其能量效率為49.2 lm/W，外部量子效率為22.7%；若將此黃光和美國國家電視標準委員會（NTSC）所制訂之標準紅綠藍光配合應用，則其色彩飽和度可達110%；此一元件的高效率，可歸因於利用了氟原子及三氟甲基來取代發光染料上的氫原子，進而改變分子間緻密的堆疊方式，以減少染料間的自我焠熄；本研究亦發現，在良好的主客體能階搭配下，可使激子更有效地注入，使載子注入平衡，進而使元件達到高效率；此外，在加入此一黃光後所得到的四波段純白光6,000K，從視網膜保護視的角度來看，比典型的三波段純白光更友善8％，從褪黑激素分泌的角度來看，也是更友善8％。

    Yellow emission plays an important role in many display and lighting applications, such as RGBY display or blue hazard free lighting sources, while wet-process enables soft devices to be manufactured cost-effectively. We demonstrate here that high efficiency yellow organic light-emitting diodes can be made with an innovative solution-process viable iridium based material bis[5-methyl-7-fluoro-8- trifluoromethyl-5H-benzo(c)(1,5)naphthyridin-6-one]iridium (picolinate) (FCF3BNO). The device exhibits a power efficacy of 49.2 lm W-1 at 1,000 cd m-2 with an external quantum efficiency of 22.7% with a spin-coated emissive layer. A National Television Standards Committee (NTSC) of 110% is achievable by employing the yellow emission along with the standard RGB. The high efficiency may be attributed to the electron-withdrawing F and CF3 substitutions in the emitter to prevent self-quenching from dense packing. We also found that high efficient can be achieved for wet-processed devices simply by balancing the injected holes and electrons with the help of energy-level matching hosts. The resultant RGBY composing pure white light is 8% more friendly than the typical RGB counterpart from retina protection perspective and also 8% better for melatonin secretion.

    目錄 摘要 I 英文摘要 II 致謝 IV 目錄 VIII 圖目錄 XII 表目錄 XV 壹、緒論 1 貳、文獻回顧 1 2-1 有機發光二極體的歷史發展 4 2-2 有機發光二極體的發光原理 20 2-3 有機發光二極體的能量傳遞機制 26 2-4 光色定義 30 2-5 元件出光機制 31 2-6 有機發光二極體材料之發展 33 2-6-1陽極材料 33 2-6-2 電洞注入材料 34 2-6-3 電洞傳輸材料 35 2-6-4 電子傳輸材料 35 2-6-5 電子注入材料 36 2-6-6 陰極材料 37 2-7濕製黃光有機發光二極體之發展 37 2-8 濕式有機發光二極體之發展 39 參、理論背景 44 3-1視網膜最大可忍受之曝光極限 (MPL) 的計算 44 3-2退黑激素抑制量 (MSS) 的計算 44 3-3自然光譜相似性指數 (SRI) 的計算 46 3-4演色性指數 (CRI) 的計算 47 肆、實驗方法 49 4-1 材料 49 4-1-1 材料之功能、全名及簡稱 50 4-1-2 本研究所使用有機材料之化學結構式 51 4-2 發光染料之合成與數據分析 55 4-2-1 磷黃光FCF3BNO之合成 55 4-3材料特性量測之儀器設備與方法 58 4-3-1核磁共振光譜(nuclear magnetic resonance)之量測 58 4-3-2紫外線-可見光吸收光譜(ultraviolet visble absorption, UV-Vis)之量測 58 4-3-3光激發光譜(Photoluminescent spectrum)之量測 59 4-3-4材料裂解溫度(decomposition temperature, Td)之量測 59 4-3-5激態生命期(excited-state lifetime)之量測 59 4-3-6量子產率(quantum yield)之量測 60 4-3-7最高已填滿分子軌域(highest occupied molecular orbital, HOMO)量測 61 4-4 元件設計及製備 61 4-4-1 元件電路設計 61 4-4-2 ITO基材清潔 62 4-4-3 旋轉塗佈電洞傳輸層 63 4-4-4 旋轉塗佈發光層 64 4-4-5 熱蒸鍍製程 65 4-4-6 成膜鍍率測定 66 4-4-7 有機層之製備 66 4-4-8 無機層之製備 66 4-5 元件之量測及發光效率計算 67 伍、結果與討論 69 5-1新穎磷黃光材料之光物理與電化學性質 69 5-2主體效應 75 5-2-1 元件結構 76 5-2-2 主體材料對黃光OLED的影響 77 5-2-3 染料濃度對黃光OLED的影響 83 5-3 共主體效應 84 5-3-1 共主體元件結構 84 5-3-2 共主體材料對黃光OLED的影響 85 5-4 四波段白光之健康特質- MPL/MSS (與三波段之比較) 90 陸、結論 91 柒、參考文獻 94 附錄、個人著作目錄 108 (A)期刊論文 108 (B)研討會論文 109

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