Carbon nanotubes on flattened tin alloy spheres in a Ball Grid Array (BGA) for cold cathode applications

S. S.Max Chung, Bohr Ran Huang, Chih Chia Chiang, Yon-Hua Tzeng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Carbon Nanotube (CNT) is an excellent field emission source, and is widely explored in applications like sensors, AFM probes, cathodes for Carbon Nanotube Field Emission Display (CNT-FED), and cathodes for microwave device. The requirements on field emission characteristics for these applications vary, but it is often necessary to attach CNT onto a metal electrode surface. When CNT is grown directly on a metal surface by conventional CVD processes, the poor adhesion of CNT to the metal surface and, in some cases, low electrical conductivity leave room for improvements. We hot-bond CVD grown CNT with Ball Grid Array (BGA) of 0.5 mm diameter Tin alloy (Sn63/Pb37) spheres placed in pre-designated positions on a metal surface to form a cold cathode for microwave device applications. The forming temperature is about 200°C. This method not only provides an easy way to make CNT-metal cathode, it also greatly improve the field emission characteristics of the original CNT. The turn on electric field (at J= 1μA/cm2) is 1.56 V/μm with the field enhancement factor β reaching 2203. The ΔJ/ΔE is around 1.09M.

Original languageEnglish
Title of host publication2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings
Pages787-790
Number of pages4
DOIs
Publication statusPublished - 2007 Dec 1
Event2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007 - Hong Kong, China
Duration: 2007 Aug 22007 Aug 5

Publication series

Name2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings

Other

Other2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007
CountryChina
CityHong Kong
Period07-08-0207-08-05

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

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