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Title page for etd-0817110-154438


URN etd-0817110-154438 Statistics This thesis had been viewed 2572 times. Download 477 times.
Author Jian-Min Jeng
Author's Email Address No Public.
Department Electro-Optical Engineering
Year 2009 Semester 2
Degree Ph.D. Type of Document Doctoral Dissertation
Language English Page Count 177
Title Fabrication and Modification of Carbon Nano Materials for Electron Field Emission Application
Keyword
  • Carbon nanotube
  • Electron field emission
  • Carbon nanoflake
  • Carbon nanoflake
  • Electron field emission
  • Carbon nanotube
  • Abstract In the study, the carbon materials form the electron field emitter, and successfully improved by various surface treatments of the defects. Two kinds of electron field emission source of carbon nanoflakes (CNFs) and commercial graphite flake were used in this study.
     We used commercial graphite flake powder and tried to improve its field emission properties. Commercial flake graphite powder size is micron scale; the turn-on field is about 7.7 V/μm. By the surface modification of hydrogen heat treatment can reduce the turn-on field to 4.3 V/μm. The turn-on field is further reduced to 1.9 V/μm by heat treatment introduced into acetylene and hydrogen, owing to the growth of CNT on above.
     Developed in the laboratory of the two-dimensional structure of the CNFs, the height and thickness of the CNFs are micron and nano-scale, vertical upright on the substrate. We developed the CNFs by RF magnetron sputtering since the equipment costs and production complexity are lower than the chemical vapor deposition method. Experiment observed the formation of CNFs in the manner and process parameters for the field emission characteristics of CNF and surface morphology. We use heat and drape management to improve field emission properties of CNFs. With carbon-coated treatment makes the field emission from the turn-on field of 5.8 V/μm significantly reduced to 2.3 V/μm. The carbon-coated handle and improve their methods can be carried out under 500 ˚C, and this process can be applied to the glass substrate process.
     Finally we fabricated the 7-inch field emission backlight unit with Tatung Company and Chunghwa Picture Tubes cooperation and the backlight unit has successfully driven show with 7-inch digital photo frame.
    Advisor Committee
  • Wen-Ching Shih - advisor
  • I-Nan, Lin - co-chair
  • Jason Lo - co-chair
  • Jeff Tsai - co-chair
  • Shinn-Shyong, Tzeng - co-chair
  • Shyan-Kay, Jou - co-chair
  • Files indicate in-campus access at 1 years and off-campus access at 2 years
    Date of Defense 2010-05-07 Date of Submission 2010-08-18


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