臺灣博碩士論文加值系統

本研究使用厚度0.05mm的不鏽鋼箔片作為可撓基板，在此基板上製作橘色上發光有機發光二極體。不鏽鋼箔片本身為金屬材質，表面較為粗糙，所以需要製作一層平坦層，以改善表面粗糙的問題，並當作絕緣層，避免陰陽極短路問題。
本實驗一開始先使用SiO2當作絕緣層，但因為SiO2容易被擊穿造成元件短路，所以改成在不鏽鋼基板上旋塗一種溶液型有機材料來當絕緣平坦層，此平坦層烤乾之後厚度較厚在元件製作時不會形成短路問題。
因實驗是以可撓不鏽鋼為基板，所以元件進行封裝後應保持可彎曲性。本實驗使用一般耐熱膠帶、奈米膠帶、液態UV膠、封裝貼膜、PDMS以及玻璃蓋板進行封裝及壽命量測，測試結果以玻璃蓋板為最佳。
製作不鏽鋼上發光時會發生許多下發光元件不會產生的問題，例如上發光有機薄膜的厚度，若直接使用製作下發光時的有機薄膜厚度會導致發光波長偏移之現象，所以需要調變薄膜厚度來抑制這種現象。
本論文實驗結構不鏽鋼基板/絕緣平坦層/Al(100 nm)/HATCN(5 nm)/TAPC(20 nm)/BH-08(host):OD-01(dopant)(30 nm)/TPBi(20 nm)/ LiF /Al (6 nm)/Ag(8 nm)，最後在LiF /Al為6 nm，Ag為8 nm時，不鏽鋼橘光上發光OLED有良好的亮度。

This study utilizes a 0.05mm thick stainless steel foil as a flexible substrate to fabricate orange top-emitting organic light-emitting diodes (OLEDs). The stainless steel foil, being metallic, has a relatively rough surface, necessitating the creation of a flat layer to improve surface roughness and act as an insulating layer to prevent cathode-anode short-circuit issues.
Initially, SiO2 was used as the insulating layer. However, due to SiO2's susceptibility to breakdown, resulting in device short circuits, a solution-based organic material was spin-coated onto the stainless steel substrate to serve as a flat insulating layer. After baking, this flat layer has sufficient thickness to prevent short-circuiting during device fabrication.
Since the experiment employs flexible stainless steel as the substrate, the devices should retain flexibility after encapsulation. Various methods including regular heat-resistant tape, nanometer tape, liquid UV glue, encapsulation film, PDMS, and glass cover were tested for encapsulation and lifespan measurement, with a glass cover being the most effective.
Fabricating top-emitting OLEDs on stainless steel introduces challenges not encountered with bottom-emitting devices, such as controlling the thickness of the organic thin film. Using the same thickness as for bottom-emitting devices can lead to wavelength shifts in emission. Therefore, modulation of the thin film thickness is necessary to mitigate this phenomenon.
The experimental OLED structure consists of a stainless steel substrate/insulating flat layer/Al(100 nm)/HATCN(5 nm)/TAPC(20 nm)/BH-08(host):OD-01(dopant)(30 nm)/TPBi(20 nm)/ LiF /Al (6 nm)/Ag(8 nm). Optimal brightness was achieved with a LiF /Al thickness of 6 nm and Ag thickness of 8 nm in the stainless steel orange top-emitting OLEDs.

摘要…i
Abstract…ii
誌謝…iii
目錄…iv
表目錄…vi
圖目錄…vii
第一章 緒論…1
1.1 有機發光二極體簡介…1
1.2 研究動機…2
第二章 有機發光二極體原理及文獻探討…3
2.1 有機發光二極體原理…3
2.1.1 有機發光二極體發光機制…3
2.1.2 電流注入理論…5
2.1.3 有機發光二極體各層結構介紹…6
2.2 有機發光二極體文獻探討…8
第三章 實驗方法與步驟…11
3.1 實驗流程…11
3.1.1 上發光不鏽鋼流程圖…11
3.1.2 下發光玻璃流程圖…12
3.2 上發光與下發光陽極與陰極圖形定義製備…13
3.2.1 下發光基板雷射雕刻圖形化…13
3.2.2 玻璃基板清洗流程…15
3.2.3 上發光不鏽鋼基板清洗…16
3.3 上發光不鏽鋼絕緣平坦層…17
3.3.1 旋塗絕緣平坦層…17
3.4 上發光金屬蒸鍍延伸電極-陰極及陽極操作流程…19
3.5 熱蒸鍍有機層…21
3.5.1 熱蒸鍍有機層操作流程…21
3.5.2 溶液式有機材料選用…25
3.5.3 熱蒸鍍有機層之材料選用…26
3.6 金屬蒸鍍陰極…29
3.7 元件封裝…31
3.8 元件發光特性與壽命量測…35
第四章 結果與討論…37
4.1 下發光有機發光二極體之光電特性…37
4.1.1 使用不同電子注入層(EIL)之光電特性…37
4.1.2 橘光下發光有機發光二極體元件…40
4.2 絕緣平坦層…42
4.3 上發光有機發光二極體…44
4.3.1 有機薄膜厚度對上發光元件發光顏色之影響…44
4.3.2 不鏽鋼橘光上發光調變電洞傳輸層(HTL)厚度之影響…47
4.3.3 調變陰極厚度對不銹鋼上發光橘光元件之影響…50
第五章 結論…53
參考文獻…54
Extended Abstract…56

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