Narrow-Chirality Distributed Single-Walled Carbon Nanotube Growth from Nonmagnetic Catalyst
Narrow-Chirality Distributed Single-Walled Carbon Nanotube Growth from Nonmagnetic Catalyst
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DOI：
10.1021/ja103362j
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发表时间：
2010-07-21
影响因子：
15
通讯作者：
Hatakeyama, Rikizo
中科院分区：
文献类型：
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作者：
Ghorannevis, Zohreh;Kato, Toshiaki;Hatakeyama, Rikizo
我们首次展示了窄手性分布单壁碳纳米管（SWNTs）的非磁性催化合成。基于对催化剂类型（磁性或非磁性）和化学气相沉积（CVD）方法（热CVD（TCVD）或等离子体CVD（PCVD））不同组合的系统研究，发现在适当的H - 2浓度下使用非磁性催化剂的PCVD作为实现窄手性分布的方法要素至关重要。还研究了在催化剂类型和CVD方法的不同组合下制备的薄膜SWNTs的电学测量，结果表明使用非磁性催化剂通过PCVD生长的SWNTs显示出最佳的器件性能。
We present the first demonstration of the nonmagnetic catalyzed synthesis of narrow-chirality distributed single-walled carbon nanotubes (SWNTs). Based on the systematic investigation using different combinations of catalyst types (magnetic or nonmagnetic) and chemical vapor deposition (CVD) methods (thermal CVD (TCVD) or plasma CVD (PCVD)), PCVD with the nonmagnetic catalyst under the appropriate H-2 concentration is found to be critical as the methodological element of realizing the narrow-chirality distribution. Electrical measurements of thin film SWNTs produced under the different combinations of catalyst types and CVD methods are also investigated, which reveals the SWNTs grown from the nonmagnetic catalyst with PCVD display the best device performance.