Growing highly pure semiconducting carbon nanotubes by electrotwisting the helicity
| Autor: | Lina Zhang, Qingqing Ji, Yang Wu, Jiangtao Wang, Zhang Ke, Zebin Liu, Guo Yu, Kaili Jiang, Jiachen Li, Jiaping Wang, Li Dong-Qi, Peng Liu, Zi Yuan, Qunqing Li, Jin Zhang, Jing Kong, Haoming Wei, Xiang Jin, Yang Wei, Shoushan Fan |
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| Rok vydání: | 2018 |
| Předmět: |
Nanotube
Materials science Silicon chemistry.chemical_element Bioengineering Nanotechnology 02 engineering and technology Carbon nanotube Integrated circuit Substrate (electronics) 010402 general chemistry 01 natural sciences Biochemistry Catalysis Nanomaterials law.invention law Electric field business.industry Process Chemistry and Technology 021001 nanoscience & nanotechnology 0104 chemical sciences Semiconductor chemistry 0210 nano-technology business |
| Zdroj: | Nature Catalysis. 1:326-331 |
| ISSN: | 2520-1158 |
| Popis: | Carbon nanotubes (CNTs) are anticipated to be the successor of silicon in next-generation integrated circuits. However, one great challenge to the practical application of this concept is the need to grow horizontal semiconducting CNT arrays with very high purity. Here we show that this roadblock can be eliminated by switching the direction of an applied electric field during synthesis. This electro-renucleation approach twists the chirality of the CNTs to produce nearly defect-free s-CNTs horizontally aligned on the substrate with less than 0.1% residual metallic CNT. In principle, this residual percentage can be further reduced to less than 1 ppm simply by tuning the CNTs’ diameters to around 1.3 nm. Electro-renucleation thus offers a potential pathway to practical applications of CNT electronics and opens up a new avenue for large-scale selective synthesis of semiconducting CNTs and other nanomaterials. The main hurdle to the deployment of carbon nanotubes in the electronics industry is the requirement of obtaining pure semiconductor nanotube horizontal arrays. Here, a method is presented to prepare highly pure semiconductor nanotubes by switching the direction of an applied electric field during synthesis. |
| Databáze: | OpenAIRE |
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