Investigation of ultraviolet optical properties of semiconducting-enriched and metal-enriched single-walled carbon nanotube networks using spectroscopic ellipsometry
- Authors
- Park, Young Ran; Kim, Woo-Jae; Ko, Min Jae; Min, Nam Ki; Lee, Cheol Jin
- Issue Date
- 2012
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v.4, no.20, pp.6532 - 6536
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCALE
- Volume
- 4
- Number
- 20
- Start Page
- 6532
- End Page
- 6536
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106256
- DOI
- 10.1039/c2nr31205k
- ISSN
- 2040-3364
- Abstract
- The ultraviolet optical properties of semiconducting-enriched and metallic-enriched single-walled carbon nanotube (semi-enriched and m-enriched SWCNT) networks were studied using spectroscopic ellipsometry. According to calculated energy loss function, the energy loss peak assigned to the maximum intensity of p-plasmon energy was found to increase from 4.5 eV to 5.0 eV as SWCNT network composition was changed from m-SWCNT enriched to semi-SWCNT enriched. These results clearly demonstrate that the dielectric response in the 4-6 eV range is sensitive to changes in the surrounding dielectric environment depending on the semi-/m-SWCNT content. Therefore, the spectral shift of this energy loss is attributed to the enhanced electron confinement by the presence of the surface plasmon due to a small amount of m-SWCNT, which is an important phenomenon at the SWCNT network.
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Collections - Graduate School > KU-KIST Graduate School of Converging Science and Technology > 1. Journal Articles
- College of Science and Technology > Department of Electro-Mechanical Systems Engineering > 1. Journal Articles
- College of Engineering > School of Electrical Engineering > 1. Journal Articles
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