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Student Number 942206037
Author Wen-cheng Kuo(郭文政)
Author's Email Address No Public.
Statistics This thesis had been viewed 1859 times. Download 1054 times.
Department Optics and Photonics
Year 2006
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title A Research for Polarized Organic Light Emitting Diode
Date of Defense 2007-07-09
Page Count 43
Keyword
  • polarized OLED
  • Abstract Recently, polarized polymer OLEDs is of practical interest because they may facilitate the fabrication of liquid crystal displays without polarizer, which will lead to simplification of display manufacture and reduction of cost. However, in OLEDs market, small molecule materials are used largely than polymer materials in manufacturing OLEDs now. But polarized OLEDs using small molecule ordered film are rarely found in the literature. In this thesis, polarized OLEDs using small molecule materials are studied.
    By utilizing oblique evaporation method, small molecule materials are aligned to form ordered structure. Incorporating obliquely evaporated Alq3 film in device ITO/m-MTDATA/α-NP/Alq3/LiF/Al, polarized OLEDs are fabricated successfully with polarization ratio 3.
    In order to improve the polarization ratio of the device, rubbing alignment technique used in polymer polarized OLEDs are integrated to enhance orientation of obliquely evaporated film. We use PVK as an hole transport alignment layer by mechanical rubbing. After that, blue DPVBi emitting materials are deposited obliquely on it to form heterojunction structure. Polarized device, ITO/PEDOT/PVK/DPVBi/Alq3/LiF/Al, are fabricated successfully. EL polarization ratio is raised up to 24 to be available for LCD flat display application.
    Table of Content 中文摘要.......................................I
    英文摘要.......................................II
    第一章 序論....................................1
    1.1 前言..................................................1
    1.2 偏振有機電激發光二極體光源研究的回顧..................1
    1.3 斜向真空蒸鍍研究的回顧................................3
    1.4 論文簡述.............................................4
    第二章 實驗方法...............................5
    2.1 斜向真空蒸鍍膜系統架設...............................5
    2.2 摩擦配向系統..........................................6
    2.3 Malus Law實驗架設.....................................7
    2.4 材料特性與元件製作及量測..............................8
    2.4.1 材料..............................................8
    2.4.2 偏振PL量測.......................................9
    2.4.3 元件製作及偏振EL................................10
    第三章 結果與討論.............................12
    3.1 全小分子有機薄膜偏振元件.............................12
    3.1.1 金屬鋁偏振膜偏振特性分析.........................12
    3.1.2 有機螢光材料表面形貌及偏振特性分析...............13
    3.1.3 全小分子偏振有機電激發光元件特性分析.............18
    3.2 配向高分子/斜向蒸鍍小分子
    異質接面結構偏振有機薄膜元件.........................23
    3.2.1 高分子摩擦配向表面形貌分析.......................23
    3.2.2 配向高分子/斜向蒸鍍小分子偏振螢光分析..........24
    3.2.3 DPVBi膜厚改變的效應.............................26
    3.2.4 摩擦配向膜PVK/斜向蒸鍍DPVBi
    異質接面偏振OLED元件..........................27
    第四章 結論...................................31
    參考資料......................................33
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    Advisor
  • Hsing-hua Chang(張興華)
  • Cheng-Chung Lee(李正中)
  • Files
  • 942206037.pdf
  • approve in 1 year
    Date of Submission 2007-07-19

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