ZnO nanoparticle growth on single-walled carbon nanotubes by atomic layer deposition and a consequent lifetime elongation of nanotube field emission

Yo Sep Min, Eun Ju Bae, Jong Bong Park, Un Jeong Kim, Wanjun Park, Jaewon Song, Cheol Seong Hwang, Noejung Park

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

ZnO nanoparticles were grown on single-walled carbon nanotubes (SWNTs) by atomic layer deposition using diethylzinc (DEZ) and water. The athors discuss that, because of chemical inertness of nanotubes to DEZ and water molecules, such nanoparticles are not likely to grow on the wall of clean and perfect nanotubes. Rather, the growth of ZnO nanoparticles should be attributed to imperfection of nanotubes, such as defects and carbonaceous impurities. Lifetime of field emission from SWNTs with the ZnO nanoparticles is 2.5 times longer than that from the as-grown nanotubes. It is thought that the protection of the defects or impurities by ZnO nanoparticles mainly contributed to the improvement of the field emission lifetime from SWNTs.

Original languageEnglish
Article number263104
JournalApplied Physics Letters
Volume90
Issue number26
DOIs
StatePublished - 2007

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