研究生: |
詹文皓 Wen-Hao Chan |
---|---|
論文名稱: |
電洞傳輸層製備方式對有機電致發光元件之影響 Effect of the Fabrication Method of the Hole-transport Layer on Organic Electroluminescence Devices |
指導教授: |
周卓煇
Jwo-Huei Jou |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 材料科學工程學系 Materials Science and Engineering |
論文出版年: | 2001 |
畢業學年度: | 89 |
語文別: | 中文 |
論文頁數: | 70 |
中文關鍵詞: | 有機電致發光元件 、電洞傳輸層製備方式 、鍍膜速率 |
外文關鍵詞: | Organic Electroluminescence Devices, Hole-transport Layer, oled, oel |
相關次數: | 點閱:4 下載:0 |
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本實驗採用兩種不同鍍膜速率交替鍍覆電洞傳輸層TPD,期望得到具有不同品質的薄膜交替組合而成的元件,並就元件電流-電壓-亮度特性以及交替鍍覆的薄膜表面形態作一探討。
元件結構依序為ITO(750 Å)/TPD(600 Å)/Alq3(550 Å)/Al(1000 Å),鍍覆有機層的條件為:電子傳輸層Alq3的鍍膜速率維持在3~4 Å/sec之間;電洞傳輸層TPD採用鍍膜速率0.5~1.5 Å/sec及6~8 Å/sec鍍覆,以及將TPD層在同為厚度600 Å條件下,分別用上述兩種鍍膜速率作交替鍍覆,分為兩次交替鍍覆、三次交替鍍覆和六次交替鍍覆。
實驗結果可推測元件表現深受TPD與Alq3接觸面的薄膜特性影響,而不論TPD是在何種鍍膜速率或交替鍍覆條件下製作的元件,其最大亮度的差異均不大,但達到相同亮度的驅動電壓差異卻可因製程條件的不同而高達4伏特。
與實驗室早期結果比較,本實驗大幅提昇了元件的亮度,元件亮度由早期1200 cd/m2提升到3800 cd/m2,而使元件有較高亮度之進步性的原因有二:一為鍍覆鋁電極的方式,可使元件不因鍍覆電極時的高溫而損壞;二為鍍膜速率的不同,以及交替鍍覆的使用。
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