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| 研究生： |
陳宏鈞 Chen, Hung-Chun |
|---|---|
| 論文名稱： |
設計與合成苯並喹喔啉茚衍生物與其應用於白色串聯式有機電激發光元件之載子產生層 Benzoquinoxaline Indene Derivatives as n-type Charge Generation Material in White Light Tandem Organic Electroluminescent Device |
| 指導教授： |
鄭建鴻
Cheng, Chien-Hong |
| 口試委員: |
周鶴修
Chou, Ho-Hsiu 陳秋炳 CHENG, CHEU-PYENG |
| 學位類別： |
碩士 Master |
| 系所名稱： |
理學院 - 化學系 Department of Chemistry |
| 論文出版年： | 2017 |
| 畢業學年度： | 105 |
| 語文別： | 中文 |
| 論文頁數： | 157 |
| 中文關鍵詞： | 串聯式有機電激發光元件 、載子產生層 、苯並喹喔啉茚 、白光有機電激發光元件 |
| 外文關鍵詞： | Benzoquinoxaline Indene Derivatives, n-type Charge Generation Material, White Light Tandem Organic Electroluminescent Device |
| 相關次數： | 點閱：2 下載：0 |
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本論文中，我們成功合成出兩種以苯並喹喔啉茚(Benzoquinoxaline Indene) 為主體結構的n型載子產生層材料- BQITKT與BQIMN，苯並喹喔啉茚主體結構擁有良好的平面堆疊性與電子傳遞能力，利用官能基羧基與氰基修飾後，降低其LUMO能階到 (4.2~4.4 eV)，搭配上三氧化鉬 (MoO3) 時，擁有優秀的載子產生能力，其在載子產生測試時優於C60搭配三氧化鉬 (MoO3)。將BQITKT與BQIMN應用於藍色與白色的磷光串聯式元件時，相較於一般單層元件，在固定電流的情況下，效率與亮度皆能有效提升至兩倍。在優化以FIrpic為客體材料的藍色磷光串聯式元件，其最大外部量子效率可達70.0%，電流效率為158.6 cd/m2，功率效率為59.3 lm/W；優化化以FIrpic與Ir(pq)3為客體材料的白色磷光串聯式元件，其最大外部量子效率達65.5%，電流效率為138.0 cd/m2，CIE座標位於 (0.33, 0.39)，屬於暖白光，且白光光色隨亮度更趨近於暖白光。實驗結果證明我們開發的n型載子產生層材料BQITKT與BQIMN是能有效運用在製作高效率的串聯式元件。
Recently, the tandem white OLEDs have been considered to be a potential approach in realizing bright lighting sources because of their ability to simultaneously achieve high efficiency and long device lifetime. In tandem architecture, charge generation layer (CGL), composed of p-n hetrojunction, functions as an internal electrode and thus plays a decisive role in device performance. However, the use of n-type CGL is still restricted to traditional electron-transporting material to date. Presented in this work is to develop two newly n-type CGL materials (BQITKT and BQIMN) for the application of tandem blue and white OLEDs. It is found that the EQEs and turn-on voltages in both tandem blue and white OLEDs are close to the sums of the values for each individual EL unit. The best tandem blue device using BQIMN and p-type MoO3 as CGL gives external of quantum efficiency (EQE) of 70.0%, superior to that connected by BQITKT/MoO3. This is because the interface of BQIMN/MoO3 can result in efficient charge generation process compared with that of BQITKT/MoO3; moreover, the best tandem white device gives EQE of 65.5% and good white color with a CIE coordinate of (0.33, 0.39). These findings demonstrate that our developed compounds are promising n-type CGL materials for developing highly efficient tandem OLEDs.
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