以化學鍍法製備奈米碳管場發射發光元件

• Main Authors: Chuan Ting Lin, 林俊廷
• Other Authors: 葛明德
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/16906887517333344005

碩士 === 國防大學中正理工學院 === 應用化學研究所 === 95 === ABSTRACT A method to prepare field emission cathode plates with carbon nanotubes (CNTs) using chemical-electroless plating was studied in this thesis. This technique has potential to replace commonly used processes, such as screen paste printing and direct grows of carbon nanotubes, in the field emission display (FED) industry. There are numerous advantages of the chemical-electroless process, such as lower cost of consuming material, inexpensive instruments and equipments, large-area production potential and good uniformity. The composite cathode plates prepared by our electroless plating method also have merits like strong adhesion with the glass matrix, easy to fabricated, lower amount of consuming CNTs and good field emission quality and uniformity. In this study, the CNTs and nickel phosphorus alloy were co-deposited to form cathode composite on the sodium glass surface. The effects of electroless plating parameters and surface modification of CNTs on the amount of CNTs in the composite and their field emission properties were discussed. The properties and morphology of purified and surface-modified CNTs were evaluated and observed with FTIR, Raman spectrum, FE-SEM and HR-TEM. The distribution and amount of CNTs in the deposited composite were also observed by FE-SEM. The prepared CNTs/Ni-P composites were activated using etching or taping and tearing technique to let the embedded CNTs expose from the composites and align vertically, which can enhance the field emission properties of these composites. The field emission tests were then performed to know the IV-curves and emission image quality of these composites. The result reveals that the field emission performance of the composites made by surface-modified CNTs are great, and it will change when using different CNTs. Using the high quality CNTs, X CNT, synthesized by thermal chemical vapor deposition, the cathode composite with excellent field emission properties was achieved with the turn-on electric field (0.1 mA/cm2) at 3 V/μm, the current density of 10 mA/cm2 at 5.3 V/μm, high brightness and excellent uniformity of emission image. Keywords: surface-modified CNTs, electroless composite coating, field emission.