Direct Growth of Single-Walled Carbon Nanotube Networks on Alumina Substrate: A Novel Route to Ultrasensitive Gas Sensor Fabrication
Direct Growth of Single-Walled Carbon Nanotube Networks on Alumina Substrate: A Novel Route to Ultrasensitive Gas Sensor Fabrication
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DOI：
10.1143/jjap.44.8227
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发表时间：
2005-11
影响因子：
1.5
通讯作者：
W. Wongwiriyapan;S. Honda;H. Konishi;T. Mizuta;T. Ohmori;T. Ito;T. Maekawa;Kengo Suzuki;H. Ishikawa;T. Murakami;K. Kisoda;H. Harima;K. Oura;M. Katayama
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文献类型：
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作者：
W. Wongwiriyapan;S. Honda;H. Konishi;T. Mizuta;T. Ohmori;T. Ito;T. Maekawa;Kengo Suzuki;H. Ishikawa;T. Murakami;K. Kisoda;H. Harima;K. Oura;M. Katayama
我们研究了直接生长在氧化铝衬底上的单壁碳纳米管（SWNT）网络的结构和电学性质。网状的单壁碳纳米管在衬底上均匀生长，质量高。从拉曼光谱分析中发现，生长的SWNT网络是金属和半导体SWNT的混合物，而电击穿后的SWNT网络表现出半导体性质的优势。直接生长法和随后的电击穿促进了高通量生产具有高灵敏度的实用超灵敏污染气体传感器，NO2检测证明了这一点。
We explored structural and electrical properties of single-walled carbon nanotube (SWNT) networks directly grown on alumina substrates. The netlike SWNTs were uniformly grown on the substrate at a high quality. From the Raman spectroscopy analysis it was found that the as-grown SWNT networks were a mixture of metallic and semiconducting SWNTs, while the SWNT networks after their electrical breakdown exhibited a predominance of the semiconducting property. The direct growth method and subsequent electrical breakdown facilitated high-throughput production of practical ultrasensitive sensors for pollutant gases with a high sensitivity, which was demonstrated by NO2 detection.