Effect of double layer coating on carbon nanotubes for field emission and secondary electron emission measurement
- Authors
- Lee, Jungwoo; Park, Jaehong; Kim, Jeongyoul; Yi, Whikun
- Issue Date
- Mar-2007
- Publisher
- A V S AMER INST PHYSICS
- Citation
- JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, v.25, no.2, pp.570 - 574
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
- Volume
- 25
- Number
- 2
- Start Page
- 570
- End Page
- 574
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180385
- DOI
- 10.1116/1.2409946
- ISSN
- 1071-1023
- Abstract
- Field emissions of wide-band-gap-material (WBGM)-coated single-walled carbon nanotubes (SWCNTs) were studied. Field emission current was gradually increased after monolayer coating (MgO-coated SWCNTs) and successive double layer coating (CsI/MgO-coated SWCNTs). The turn-on field decreased from 3.26 to 2.43 and 1.61 mu A cm(-2), respectively. The calculated work functions were found to be 3.34 and 3.01 eV, and the maximum secondary electron emission yields were 115 and 40 for MgO- and CsI/MgO-coated SWCNTs, respectively. These results would be due to a higher electric field generation around the SWCNT surface after double layer WBGM coating rather than single layer WBGM coating. To reveal the influence of WBGM coating on carbon nanotubes, x-ray photoelectron spectroscopy and energy dispersive analysis of x-ray spectra were analyzed.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 자연과학대학 > 서울 화학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180385)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.