臺灣博碩士論文加值系統

　在本研究中，第一部分先以未改質之PEDOT:PSS薄膜加入有機發光二極體中，其元件結構為:ITO/PEDOT:PSS/NPB/ALQ3/TPBI/LIF/AL，分別調變PEDOT:PSS薄膜轉速，以及NPB、ALQ3、TPBI各層之厚度以達到電洞-電子的載子平衡，得到最佳的元件特性，其元件最高發光亮度為1750 cd/m2@12V，最高電流效率為3.68cd/A。
第二部分在於PEDOT:PSS分別加入不同濃度Dimethyl sulfoxide、四氫呋喃和對甲苯磺酸作為添加物，並對於改質後PEDOT:PSS薄膜的導電率、表面粗糙度及穿透度進行探討，當PEDOT:PSS薄膜加入適當濃度的添加物，使得導電度會有明顯的上升。最後將改質後之PEDOT:PSS加入有機發光二極體當中，以改善有機發光二極體之光電特性。其中摻雜Dimethyl sulfoxide之元件最佳化後，其最高電流效率為4.53cd/A；摻雜四氫呋喃之元件最佳化後，其最高電流效率達4.75 cd/A；摻雜對甲苯磺酸之元件最佳化後，其最高電流效率達4.34 cd/A。

In the present study, the first part was first doped to the organic light-emitting diodes using unmodified PEDOT:PSS films. The device structure was: ITO/PEDOT:PSS/NPB/ALQ3/TPBI/LIF/AL, which modulates PEDOT, respectively. : PSS film speed, and the thickness of each layer of NPB, ALQ3, TPBI to achieve hole-electron carrier balance, to get the best component characteristics, the highest light emitting brightness of its components is 2207 cd/m2@12V, current efficiency is 4.37 cd/A.
In the second part, different concentrations of Dimethyl sulfoxide, four hydrogen fluoride and p-toluene sulfonic acid are doped to the PEDOT:PSS, and the conductivity, surface roughness and penetration of the modified PEDOT:PSS film are discussed. When the PEDOT:PSS film is doped to the proper concentration, the conductivity will be apparent. Rise. Finally, the modified PEDOT:PSS is doped to organic light emitting diodes to improve the photoelectric properties of organic light emitting diodes (OLED). When the components of Dimethyl sulfoxide are optimized, the maximum current efficiency is 4.53cd/A; the maximum current brightness is 4.75 cd/A after the optimization of the four hydrogen fluoride elements, and the maximum current brightness is 4.34 cd/A after the components of the mixed p-toluene sulfonic acid are optimized.

摘要........i
Abstract........ii
誌謝........iii
目錄........iv
表目錄........vii
圖目錄........viii
第一章 緒論........1
1.1 有機發光二極體發展........1
1.2 有機發光二極體優點........1
1.3 PEDOT:PSS簡介........3
1.4 研究動機........5
第二章 理論背景........6
2.1 有機發光二極體結構與發光機制........6
2.1.1有機發光二極體結構........6
表2.1.1常見陰極金屬功函數表........7
2.1.2 有機發光二極體之發光機制........8
2.2文獻探討........13
第三章 實驗方法與步驟........16
3.1 OLED元件實驗流程圖........16
3.2 ITO玻璃基板前置處理........17
3.2.1 元件基板選擇........17
3.2.2 ITO陽極圖案化定義........17
3.2.3 ITO玻璃基板清洗........17
3.2.4 ITO玻璃基板表面處理........19
3.3 旋塗有機薄膜層........20
3.3.1摻雜材料之選擇........21
3.3.2旋轉塗佈摻雜DMSO之PEDT:PSS作緩衝層........23
3.3.3旋轉塗佈摻雜THF之PEDOT:PSS作緩衝層........23
3.3.4旋傳塗佈摻雜TsOH之PEDOT:PSS作緩衝層........23
3.4有機薄膜蒸鍍........24
3.4.1有機材料之選擇........24
3.4.2有機薄膜蒸鍍........26
3.5金屬薄膜蒸鍍........28
3.6元件光電特性量測........30
第四章 結果與討論........31
4.1 調整各層厚度對元件光電特性影響........31
4.1.1調整緩衝層轉速對綠光元件光電特性之影響........31
4.1.2調整電洞傳輸層厚度對綠光元件光電特性之影響........34
4.1.3調整發光層厚度對綠光元件光電特性之影響........36
4.1.4調整電子傳輸層厚度對綠光元件光電特性之影響........38
4.2加入不同濃度DMSO於PEDOT:PSS對元件之影響........41
4.2.1加入不同濃度DMSO對PEDOT:PSS薄膜表面粗糙度及導電率之影響........41
4.2.2加入不同濃度DMSO對PEDOT:PSS薄膜穿透度之影響........41
4.2.3加入不同濃度DMSO對元件光電特性之影響........42
4.3加入不同濃度THF於PEDOT:PSS對元件之影響........45
4.3.1加入不同濃度THF對PEDOT:PSS薄膜表面粗糙度及導電率之影響........45
4.3.2加入不同濃度THF對PEDOT:PSS薄膜穿透度之影響........45
4.3.3加入不同濃度THF對元件光電特性之影響........46
4.4 加入不同濃度TsOH於PEDOT:PSS對元件之影響........49
4.4.1加入不同濃度TsOH對PEDOT:PSS薄膜表面粗糙度及導電率之影響........49
4.4.2加入不同濃度TsOH對PEDOT:PSS薄膜穿透度之影響........49
4.4.3加入不同濃度TsOH對元件光電特性之影響........50
4.4.4各階段元件最佳化後之總比較........53
第五章 結論與未來展望........55
5.1 結論........55
5.2 未來展望........56
參考文獻........57
Extended Abstract........60

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