臺灣博碩士論文加值系統

本論文利用激發複合體共主體材料(Exciplex Co-Host)製作高效率發光元件，利用exciplex但作為共主體材料的最佳優勢在於可以單獨設計HTM與ETM分子以操控放光層之HOMO/LUMO能階，有效達到啓動電壓=放光能隙的可能性。這樣一個簡單的元件結構不僅具有成本效益，而且元件效率高且有效降低工作電壓。本論文著眼於此新興研究領域，將利用縝密的分子設計開發具激發複合體(exciplex)放光特性的共主體材料(exciplex co-host)，將其結合適合的放光體來製作高效率及低效率滾降的OLED元件。
第一部分我們使用PO-T2T搭配不同Donor的共主體結構摻雜工研院提供的藍光磷光材料去製成高效率藍光磷光元件，其效率最高可以高達24.8%，達到高效率、簡化結構設計及降低成本的目的。
第二部分，利用CN-T2T搭配昱鐳所提供的Donor建構適用於紅光參雜的共主體結構。利用時間解析放光頻譜深入檢視具TADF 特性分子的光物理特性參數並研究發光層之內部能量轉移行為。參雜1wt%紅色磷光材料，EQE高達24.5% (CE=32.4cd/A, PE=42.4lm/W)，CIE(0.65,0.35)。在1000 nit下EQE仍可維持在23.2% (3V)，此結果符合昱鐳的要求。

In this thesis, we report the exciplex cohost system is used to fabricate high-efficiency light-emitting devices. The advantage of using exciplex as a cohost is that HTM and ETM molecules can be designed separately to control the HOMO/LUMO energy of the light-emitting layer. Such a simple component structure is not only cost effective, but also high device performance and reducing the operating voltage. This project will use the meticulous molecular design to develop an exciplex cohost, and combine it with a suitable dopant to create high device performance and low efficiency roll-off OLEDs.
In the first part, we use PO-T2T with different donor's co-host structure to do blue phosphorescent OLEDs. The efficiency can be as high as 24.8%, achieving high efficiency, simplifying structural design and reducing the cost.
In the second part, we used CN-T2T as acceptor to mix with eRay’s donor as cohost for red PhOLEDs. The time-resolved spectroscopy was used to deeply examine the photophysical property of the TADF and study the internal energy transfer behavior. By mixing with 1wt% red phosphorescent material, the EQE of device can reach as high as 24.5% (CE=32.4cd/A, PE=42.4lm/W), CIE (0.65, 0.35). Even at 1000 nit, the EQE still can maintain at 23.2% (3V), which reach eRay’s requirement.

致謝I
摘要II
AbstractIII
目錄IV
圖目錄VIII
表目錄XII
第一章、緒論1
1-1 前言1
1-2有機發光二極體與激發複合體之介紹1
1-3 有機發光二極體演進3
1-4論文架構4
參考文獻5
第二章、實驗操作及量測6
2-1簡介6
2-2 材料準備及基本特性量測6
2-2.1 有機材料純化6
2-2.2 基本光物理特性量測6
2-2.3 有機材料能階量測7
2-2.4 螢光量子效率的量測7
2-2.5 光致放光的時間解析量測8
2-3 有機發光元件製程與量測9
2-3.1 有機材料準備9
2-3.2 元件基板清潔9
2-3.3 元件蒸鍍製程10
2-3.4 元件量測10
參考文獻11
第三章、利用激發複合體製作高效率藍光磷光元件12
3-1 緒論12
3-2 文獻回顧12
3-3 有機材料介紹與設計元件架構14
3-3.1 材料介紹14
3-3.2 設計元件架構19
3-4 mCP：PO-T2T當作主體材料之物理特性及元件表現21
3-4.1物理特性21
3-4.2元件表現23
3-5 SimCP：PO-T2T當作主體材料之物理特性及元件表現25
3-5.1 物理特性25
3-5.2元件表現27
3-6 CzSi：PO-T2T當作主體材料之物理特性及元件表現29
3-6.1物理特性29
3-6.2元件表現31
3-7 CPTBF：PO-T2T當作主體材料之物理特性及元件表現33
3-7.1物理特性33
3-7.2元件表現35
3-8 mCP：oCF3-T2T當作主體材料之物理特性及元件表現37
3-8.1物理特性37
3-8.2元件表現39
3-9 結論41
第四章、利用激發複合體製作高效率紅光磷光/螢光元件42
4-1 緒論42
4-2 昱鐳HTL有機材料介紹42
4-2.1 材料介紹42
4-3 HT-1搭配CN-T2T之物理特性及元件表現45
4-3.1 物理特性45
4-3.2 元件表現47
4-4 HT-2搭配CN-T2T之物理特性及元件表現49
4-4.1物理特性49
4-4.2元件表現51
4-5 HT-3搭配CN-T2T之物理特性及元件表現53
4-5.1物理特性53
4-5.2元件表現55
4-6 昱鐳ETL有機材料介紹57
4-6.1 材料介紹57
4-6.2 設計元件架構58
4-7 HT-2搭配ET-4之物理特性及元件表現60
4-7.1物理特性60
4-7.2元件表現62
4-8 HT-2搭配ET-5之物理特性及元件表現64
4-8.1物理特性64
4-8.2元件表現66
4-9 HT-2搭配ET-6之物理特性及元件表現68
4-9.1物理特性68
4-9.2元件表現70
4-10 新的ETL有機材料介紹及物理特性72
4-10.1 材料介紹72
4-10.2 物理特性73
4-11 HT-2搭配p-PO-T2T之物理特性及元件表現75
4-11.1物理特性75
4-11.2元件表現77
4-12 HT-2搭配3d-T2T之物理特性及元件表現79
4-12.1物理特性79
4-12.2元件表現81
4-13 HT-2搭配3i-T2T之物理特性及元件表現83
4-13.1物理特性83
4-13.1元件表現85
4-14 結論87
參考文獻88

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