Growth of semiconducting single-walled carbon nanotubes by using ceria as catalyst supports.
basic_science · Level V
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- Record sourced from PubMed, PMID 24392872.
- Also identified by DOI 10.1021/nl403515c.
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Abstract
The growth of semiconducting single-walled carbon nanotubes (s-SWNTs) on flat substrates is essential for the application of SWNTs in electronic and optoelectronic devices. We developed a flexible strategy to selectively grow s-SWNTs on silicon substrates using a ceria-supported iron or cobalt catalysts. Ceria, which stores active oxygen, plays a crucial role in the selective growth process by inhibiting the formation of metallic SWNTs via oxidation. The so-produced ultralong s-SWNT arrays are immediately ready for building field effect transistors.