Title page for etd-0515114-231530


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URN etd-0515114-231530
Author Hui-Wen Tai
Author's Email Address No Public.
Statistics This thesis had been viewed 5569 times. Download 3216 times.
Department Electro-Optical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Aging of ITO Anodes of Organic Light-Emitting Diodes Treated by Supercritical CO2/H2O2 Fluids
Date of Defense 2014-06-19
Page Count 45
Keyword
  • supercritical fluid
  • organic light-emitting diode
  • indium tin oxide
  • work function
  • surface energy
  • Abstract The aim of this dissertation was to investigate the aging of indium tin oxide (ITO) anodes of organic light-emitting diodes (OLED) treated by supercritical CO2 (SCCO2) with H2O2. By SCCO2/H2O2 4000psi-15min treatment, the work function as high as 5.3eV was achieved, which was higher than 5.2eV of the O2 plasma treated sample and 4.8eV of the as-cleaned sample. Furthermore, surface energy and polar component of as-cleaned ITO anode were 46.6 mJ/m2 and 16 mJ/m2. After treating SCCO2/H2O2 fluid, the surface energy and polar component were significantly increased to 80.2 mJ/m2 and 38.5 mJ/m2.
       However, after 96 hours aging in air, the surface energy and polar component of the SCCO2/H2O2 treated ITO anode reduced slightly to 72.6 mJ/m2 and 38.3 mJ/m2. On the other hand, the surface energy and polar component of conventional O2 plasma treated ITO anode decreased drastically to 62.3 mJ/m2 and 28.9 mJ/m2. In addition to the aging of OLED, the device of the 6 hours-aging in air sample were similar for the sample treated by SCCO2/H2O2 4000psi-15min and O2 plasma. The luminance over 40000 cd/m2 was achieved from both of the two samples. After 12 hours aging in air, the OLEDs characteristics of the SCCO2/H2O2 treated samples were better than the O2 plasma treated sample.
    Advisory Committee
  • Ting-Chang Chang - chair
  • Chao-Kuei Lee - co-chair
  • Li-Yin Chen - co-chair
  • Ann-Kuo Chu - advisor
  • Files
  • etd-0515114-231530.pdf
  • indicate access worldwide
    Date of Submission 2014-06-20

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