DOI: 10.1063/1.1351862. Secondary electron emission yields from MgO deposited on carbon nanotubes

Secondary electron emission yields from MgO deposited on carbon nanotubes

10.1063/1.1351862

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Enormously high secondary electron emission yields under electric field are observed from MgO deposited on carbon nanotubes. The yields reach a value as high as 15 000 and are strongly dependent upon the bias voltage applied to the sample. The creation of the electric field across the MgO film after bombardment of primary electrons is considered as one of key features, since positive charges are generated at the surface by departure of secondary electrons. Subsequent bombarding electrons produce other secondary electrons inside the MgO film, then the liberated secondaries are accelerated towards the surface under the strong field. Under this condition, the secondary electrons gain sufficient energy to create further electrons by impact ionization. The process continues until an equilibrium avalanche is established. To elucidate the earlier explanations, the kinetic energy spectra of secondary electrons are measured by an energy analyzer at various bias voltages in MgO/carbon nanotube samples. The analysis of spectral results with the energy band diagram gives us strong evidence for the suggested mechanism.

Bibliography

Yi, W., Yu, S., Lee, W., Han, I. T., Jeong, T., Woo, Y., Lee, J., Jin, S., Choi, W., Heo, J., Jeon, D., & Kim, J. M. (2001). Secondary electron emission yields from MgO deposited on carbon nanotubes. Journal of Applied Physics, 89(7), 4091â4095.

Authors 12

Whikun Yi (first)
SeGi Yu (additional)
Wontae Lee (additional)
In Taek Han (additional)
Taewon Jeong (additional)
Yoonseong Woo (additional)
Jeonghee Lee (additional)
Sunghwan Jin (additional)
Wonbong Choi (additional)
Jungna Heo (additional)
Dongryul Jeon (additional)
J. M. Kim (additional)

References 15 Referenced 44

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{'key': '2024020621244322400_r3', 'first-page': '607', 'volume': '2', 'year': '1988', 'journal-title': 'Scanning Microsc.'} / Scanning Microsc. (1988)
{'key': '2024020621244322400_r4'}
10.1063/1.1686497 / Rev. Sci. Instrum. (1974)
10.1016/0079-6816(86)90006-7 / Prog. Surf. Sci. (1986)
{'key': '2024020621244322400_r7'}
10.1016/S0081-1947(08)60728-6 / Solid State Phys. (1958)
{'key': '2024020621244322400_r9'}
10.1063/1.342839 / J. Appl. Phys. (1989)
10.1103/PhysRev.103.292 / Phys. Rev. (1956)
{'key': '2024020621244322400_r12', 'first-page': '464', 'volume': '48', 'year': '1991', 'journal-title': 'Appl. Surf. Sci.'} / Appl. Surf. Sci. (1991)
{'key': '2024020621244322400_r13'}
10.1103/PhysRev.88.492 / Phys. Rev. (1952)
{'key': '2024020621244322400_r15'}

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 10:16 a.m.)
Deposited	1 year, 6 months ago (Feb. 6, 2024, 7:48 p.m.)
Indexed	1 week, 3 days ago (Aug. 23, 2025, 9:39 p.m.)
Issued	24 years, 5 months ago (April 1, 2001)
Published	24 years, 5 months ago (April 1, 2001)
Published Print	24 years, 5 months ago (April 1, 2001)

Funders 0

None

BibTeX

@article{Yi_2001, title={Secondary electron emission yields from MgO deposited on carbon nanotubes}, volume={89}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1351862}, DOI={10.1063/1.1351862}, number={7}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Yi, Whikun and Yu, SeGi and Lee, Wontae and Han, In Taek and Jeong, Taewon and Woo, Yoonseong and Lee, Jeonghee and Jin, Sunghwan and Choi, Wonbong and Heo, Jungna and Jeon, Dongryul and Kim, J. M.}, year={2001}, month=apr, pages={4091–4095} }

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