| AVS 55th International Symposium & Exhibition | |
| Plasma Science and Technology | Thursday Sessions |
| Session PS-ThP |
| Session: | Plasma Science Poster Session |
| Presenter: | S.W. Huang, National Tsing Hua University, Taiwan |
| Authors: | S.W. Huang, National Tsing Hua University, Taiwan C.H. Hsiao, National Tsing Hua University, Taiwan K.-C. Leou, National Tsing Hua University, Taiwan C.-H. Tsai, National Tsing Hua University, Taiwan |
| Correspondent: | Click to Email |
Single-walled carbon nanotubes (SWNTs) have attracted a great deal of attention recently due to their unique physical properties and a wide range of potential applications, in particular, field effect transistors (FET) and nano-photonic devices. It is highly desirable to develop a method compatible with standard semiconductor microfabrication processes for direct synthesis of high quality SWNTs. In this work, we demonstrated a low temperature growth process of SWNTs on silicon substrates by inductively coupled plasma chemical vapor deposition (ICP-CVD) method with CH4/H2 gas mixture as base processing gases. A unique Ni/Al/SiO2 nanocatalysts/support system has also been developed to allow the growth of high quality SWNTs. To further improve the crystalline structure of SWNTs, oxygen was added to the processing gas mixture to remove amorphous carbons during the growth process. Both the scanning electron microscopy and micro-Raman spectra were employed for characterizations of the SWNTs. The SWNTs were successfully synthesized at a temperature as low as 600°C. Parametric experiments were conducted to optimize the O2 fraction in the gas mixture. Experimental results show that a low fraction of Oxygen not only increases the growth rate of SWNTs but also improve the quality of the tubes. The SWNTs are damaged, however, if the fraction of oxygen is too high.