Effect of Oxidation on Electronic and Geometric Properties of Carbon Nanotubes
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概要
- 論文の詳細を見る
We have studied an oxidation effect of multiwalled carbon nanotubes (MWCNTs) grown by thermal chemical vapor deposition (CVD) using ultraviolet photoelectron spectroscopy (UPS) and transmission electron microscopy (TEM). With an increasing oxygen exposure, the carbon 2p-π states at 〜 3eV below the Fermi level in the UPS spectra almost disappear, whereas the 2p-σ states around 6 eV are significantly increased. Annealing above 1000 K results in an increase of the density of states (DOSs) near the Fermi level, although a complete recovery of the 2p-πelectron states is not observed. We also observe a mode around 23 eV that is associated with the collective σ + π plasmon excitation and chemisorbed C-O bonds, which is confirmed by the density functional calculations.
- 社団法人応用物理学会の論文
- 2002-09-15
著者
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Lim Seong
Department Of Medicine Samsung Medical Center Sungkyunkwan University School Of Medicine
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Shin Young
Department Of Microbiology College Of Medicine Kangwon University
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Lee Young
Department Of Aerospace Information Engineering The Konkuk University
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Jeong Hee
Department Of Life Science And Biotechnology Faculty Of Life And Environmental Science Shimane Unive
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Lee Young
Department Of Physics Center For Nonotubes And Nanostructured Composites Institute Of Basic Science
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Jeong Hee
Department Of Physics Center For Nonotubes And Nanostructured Composites Institute Of Basic Science
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JO Chul
Department of Physics, Center for Nonotubes and Nanostructured Composites, Institute of Basic Scienc
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SAMAYOA Iran
Center for Advanced Microstructures and Devices, Louisiana State University
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CHOI Jaewu
Department of Electrical and Computer Engineering, Wayne State University
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Shin Young
Department Of Physics Center For Nonotubes And Nanostructured Composites Institute Of Basic Science
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Shin Young
Department Of Electrical And Electronic Engineering Kyung Won University
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Jo Chul
Department Of Physics Center For Nonotubes And Nanostructured Composites Institute Of Basic Science
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Samayoa Iran
Center For Advanced Microstructures And Devices Louisiana State University
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Choi Jaewu
Department Of Electrical And Computer Engineering Wayne State University
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Lim Seong
Department Of Physics Center For Nonotubes And Nanostructured Composites Institute Of Basic Science Sungkyunkwan University
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Lim Seong
Department Of Materials Science And Engineering Korea Advanced Institute Of Science And Technology
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