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研究生:陳牧賢
研究生(外文):Mu-Shian Chen
論文名稱:保護層用於有機電激發光元件封裝壽命之研究
論文名稱(外文):The Study of Encapsulation for Longevity of Organic Electroluminescent Devices with Passivation Layer
指導教授:陳念慈陳念慈引用關係
指導教授(外文):Nyen-Ts Chen
學位類別:碩士
校院名稱:國立屏東科技大學
系所名稱:機械工程系所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2010
畢業學年度:98
語文別:中文
論文頁數:61
中文關鍵詞:有機電激發光元件保護層封裝壽命
外文關鍵詞:organic electroluminescent devicespassivation layerencapsulationlifetime
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本實驗使用熱蒸鍍方法沉積保護層於元件上,並探討保護層與封裝對有機電激發光元件壽命的影響。元件結構為ITO /NPB /Alq3 /LiF/ Al。本實驗沉積m-MTDATA / SiO2作為保護層材料,提供阻隔環境水氧之效果,有效防止元件的衰退。比較有無保護層前後之光電特性,觀察衰退情形。
我們發現,保護層製程不會對元件的光電特性產生影響,且在大氣環境中可延長其壽命。在定電流密度10 mA/cm2,元件初始亮度為300 cd/m2,相對濕度50 %和70 %的環境中,量測有無保護層元件的壽命。可得知保護層元件之半衰期壽命分別提升6倍和5倍。保護層及封裝元件半衰期壽命則提升24和27倍。
根據實驗結果在封裝元件中加入保護層,可有效阻擋環境中水氣及氧氣的侵入,大幅提升元件之壽命。

In this work, we deposited the passivation layer on devices by vacuum evaporation to investigate the effect of OLED with passivation layer and encapsulation. The device structure was ITO/NPB/Alq3/LiF/Al. A m-MTDATA/SiO2 passivation layer was deposited to separate hydrosphere and prevent the degradation. The electrical and emissive properties of device with and without passivation layer are compared and the degradation was observed.
In this case, a passivation layer process did not influence the electrical and emissive characteristic of device and enhanced the lifetime in the air. The current density of device was set at 10 mA/cm2 and the initial luminance was 300 cd/m2. Under R.H 50 % and R.H 70 % in the air, the half-life of device with passivation layer improves by 6 times and 5 times, respectively. Besides, the half-life of device with passivation layer and encapsulation improves by 24 times and 27 times, respectively.
According to the experiment results, we conclude that adding a passivation layer in the encapsulation device effectively separates hydrosphere and enhances the device lifetime.

摘要 I
Abstract II
謝誌 IV
目錄 V
表目錄 VIII
圖目錄 IX
第1章 緒論 1
1.1 有機電激發光元件之發展 2
1.2 文獻回顧 4
1.3 研究動機 5
1.4 論文架構 6
第2章 OLED的理論基礎 7
2.1 有機電激發光原理 7
2.2 電極材料 11
2.2.1 陽極材料 11
2.2.2 陰極材料 11
2.3 有機材料 12
2.3.1 電洞傳輸層 12
2.3.2 電子傳輸層 13
2.3.3 緩衝層 13
2.4 有機電激發光元件的衰退機制 14
第3章 實驗方法與步驟 18
3.1 實驗流程 18
3.2儀器設備 19
3.2.1 真空蒸鍍系統 19
3.2.2 量測系統 21
3.2.2.1設備簡介 22
3.3材料選擇 31
3.4 實驗步驟 33
3.4.1 基板清洗 33
3.4.2 有機薄膜沉積 33
3.4.3 電極沉積 34
3.4.4 保護層沉積 34
3.4.5 元件封裝 34
3.5 實驗量測 35
3.5.1 光電特性量測 35
3.5.2 壽命量測 35
第4章 結果與討論 37
4.1 保護層材料 37
4.2 保護層對元件光電特性之量測 38
4.2.1 電流密度-電壓特性量測 39
4.2.2 亮度-電壓特性量測 40
4.3 保護層對元件壽命之量測 42
4.3.1 LiF薄膜對OLED元件壽命之探討 42
4.3.2 m-MTDATA薄膜對OLED元件壽命之探討 43
4.4 雙層保護層薄膜對元件壽命之影響 45
4.5 保護層與封裝元件之比較 47
4.5.1 無保護層無封裝元件 48
4.5.2 有保護層無封裝元件 48
4.5.3 有封裝無保護層元件 49
4.5.4 有封裝有保護層元件 50
第5章 結論 54
參考文獻 56
作者簡介 61


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