本論文以熱處理效應為研究重點，將高分子發光材料溶於不同沸點之溶劑，探討於不同之熱處理條件下，對於高分子發光材料其薄膜特性與元件效率之影響，並比較溶劑沸點差異是否影響最佳化之熱處理條件。
實驗過程中我們將高分子藍光材料BP105溶於Toluene、o-xylene，其中BP105之玻璃轉移溫度為120.7℃，Toluene之沸點為110℃，o-xylene之沸點為145℃，即Toluene與o-xylene之沸點分別低於、高於BP105之玻璃轉移溫度，藉以比較其最佳熱處理條件是否因溶劑沸點差異而造成影響，並探討熱處理溫度與溶劑沸點、高分子材料玻璃轉移溫度之間的相互關係，確定其是否影響高分子薄膜之表面型態與元件特性。元件結構如下：ITO / PEDOT:PSS / BP105 / LiF / Ca / Al
由實驗結果得知，於不同之熱處理條件將造成薄膜光譜圖形及表面型態改變，不同溶劑之選擇亦將影響元件製程之最佳熱處理條件，且於本實驗中觀察到薄膜表面粗糙度為主要影響元件效率之因素；由Toluene與o-xylene兩種溶劑之比較，可發現當使用之溶劑沸點＞熱處理溫度＞材料玻璃轉移溫度時，其高分子薄膜具有較平整之表面型態，導致有機層與陰極介面較密合進而提升元件之電流注入，且元件亦較為穩定。
最後我們得到，以o-xylene為溶劑時其最佳熱處理溫度為130℃，此時具有最小之薄膜表面粗糙度為0.393 nm，且其元件效率之最大亮度為8593 cd/m2(12.5 V)，電流密度於100 mA時，發光效率為3.98 cd/A，功率效率為1.43 lm/ W。

The purpose of this research is to study the effect of the thermal treatment on the devices. We dissolved polymer light emitting materials in different solvents to discuss the influence on polymer thin film and device efficiency at different thermal conditions. We confirmed that the best thermal condition was changed as that of solvent changes.
In this study, we dissolved polymer blue light material－BP105 in Toluene and o-xylene. The glass transition temperature (Tg) of BP105 is 120.7℃, and the boiling point of Toluene and o-xylene were 110 and 145℃. That is namely the boiling point of Toluene and o-xylene are lower and higher, respectively, than the Tg of BP105. This makes us to compares the thermal treatment conditions on different influence from different boiling point of solvents. The interrelations between the thermal treatment temperature, the boiling point of solvents and the glass transition temperature of polymer is an interesting topic to study, because it does affect the surface morphology of polymer thin films and the characteristic of devices. The device structure is as follows: ITO/ PEDOT:PSS/ BP105/ LiF/ Ca/ Al.
Known from the experimental results that the spectra and the morphologies of polymer thin films will change in the different thermal treatment condition, and the choice of different solvent will also affect the best thermal treatment condition for device processing. We observed the surface roughness of polymer thin film is one of the important factors to affect the device efficiency in this study. We found that if the boiling point of used solvent was higher than the thermal treatment temperature, which was higher than the Tg of polymer, the surface roughness of polymer thin film is more smooth resulting in higher current injecting and higher stability of the device.
The best thermal treatment temperature is 130℃ by using o-xylene as solvent. The surface roughness of polymer thin film is 0.393 nm, and the maximum brightness of the device is 8593 cd/m2 at 12.5 V as a configuration of ITO(1500Å)/PEDOT:PSS(800Å)/BP105(650Å)/LiF(10Å)/ Ca(100Å)/ Al(2000Å). The luminous and the power efficiencies are 3.98 cd/A, and 1.43 lm/W, respectively, at the current density 100 mA/cm2.

誌謝
中文摘要
Abstract
目錄
圖目錄
表目錄
第一章 導論
1-1 前言
1-2 有機電激發光元件(OLED)簡介
1-3 有機電激發光元件結構與發光機制
第二章 理論基礎
2-1 有機及無機電激發光機制概略比較
2-2 有機電激發光能量轉移機制
2-2-1 放射能量轉移(Radiative Energy Transfer)
2-2-2 非放射能量轉移(Nonradiative Energy Transfer)
2-2-2-A Förster能量轉移機制
2-2-2-B Dexter能量轉移機制
2-3 內、外部量子效率
2-3-1 外部量子效率
2-3-2 內部量子效率
2-4 有機電激發光元件特性
2-5 CIE座標
2-6 研究動機
第三章 實驗製程步驟與分析儀器
3-1 實驗材料、製程設備、量測儀器
3-1-1 實驗材料
3-1-2 製程設備
3-1-3 量測儀器
3-2 實驗設計
3-3 實驗流程
3-3-1 ITO陽極圖形化(ITO Patterning)
3-3-2 PLED元件製程
第四章 結果與討論
4-1 材料性質分析
4-1-1 光譜量測
4-1-2 能階量測
4-1-3 玻璃轉移溫度量測
4-2 PLED基礎元件製作
4-2-1 藍光PLED基礎元件製作
4-2-2 藍光PLED陰極結構最佳化
4-3 熱處理效應
4-3-1 以Toluene為溶劑
4-3-1-A 光譜量測
4-3-1-B 元件製作
4-3-1-C 表面粗糙度量測
4-3-1-D 小結
4-3-2 以o-xylene為溶劑
4-3-2-A 光譜量測
4-3-2-B 元件製作
4-3-2-C 表面粗糙度量測
4-3-1-D 小結
4-3-3 溶劑差異比較
4-3-3-A 光譜量測比較
4-3-3-B 元件效率比較
4-3-3-C 表面粗糙度比較
第五章 總結與未來工作
5-1 總結
5-2 未來工作
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