Efficient Coupling of Optical Energy for Rapid Catalyzed Nanomaterial Growth: High-Quality Carbon Nanotube Synthesis at Low Substrate Temperatures
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- 作者：Muhammad Ahmad ; Jose V. Anguita ; Vlad Stolojan ; J. David Carey ; S. Ravi P. Silva
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2013
- 出版时间：May 8, 2013
- 年：2013
- 卷：5
- 期：9
- 页码：3861-3866
- 全文大小：377K
- 年卷期：v.5,no.9(May 8, 2013)
- ISSN：1944-8252
文摘
The synthesis of high-quality nanomaterials depends on the efficiency of the catalyst and the growth temperature. To produce high-quality material, high-growth temperatures (often up to 1000 掳C) are regularly required and this can limit possible applications, especially where temperature sensitive substrates or tight thermal budgets are present. In this study, we show that high-quality catalyzed nanomaterial growth at low substrate temperatures is possible by efficient coupling of energy directly into the catalyst particles by an optical method. We demonstrate that using this photothermal-based chemical vapor deposition method that rapid growth (under 4 min, which includes catalyst pretreatment time) of high-density carbon nanotubes can be grown at substrate temperatures as low as 415 掳C with proper catalyst heat treatment. The growth process results in nanotubes that are high quality, as judged by a range of structural, Raman, and electrical characterization techniques, and are compatible with the requirements for interconnect technology.