Structure and field electron emission of carbon nanotubes dependent on growth temperature

Yoon Huh, Jeong Yong Lee, Tae Jae Lee, Seung Chul Lyu, Cheol Jin Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This present work deals with the temperature dependence on the growth and structure of CNTs grown by thermal CVD. The vertically aligned CNTs are synthesized on iron (Fe)-deposited silicon oxide (SiO 2) substrate by thermal CVD using acetylene gas at temperatures in the range 750-950°C. Configuration and structural characteristics of CNTs have been investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). As the growth temperature increases from 750 to 950°C, the growth rate and the average diameter increase while the density decreases by a factor of about 2. TEM images show that the relative amount of crystalline graphitic sheets increases with increasing the growth temperature and a higher degree of crystalline perfection can be achieved at 950°C. The HRTEM images reveal consistently that the degree of crystalline perfection increases progressively as the growth temperature increases. This result demonstrates that the growth rate, diameter, density, and crystallinity of carbon nanotubes can be controlled with the growth temperature.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsS.C. Moss
Pages127-131
Number of pages5
Volume728
Publication statusPublished - 2002
Externally publishedYes
EventFunctional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques - San Francisco, CA, United States
Duration: 2002 Apr 22002 Apr 5

Other

OtherFunctional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques
CountryUnited States
CitySan Francisco, CA
Period02/4/202/4/5

Fingerprint

Carbon Nanotubes
Electron emission
Growth temperature
Carbon nanotubes
Crystalline materials
Chemical vapor deposition
Transmission electron microscopy
Acetylene
Silicon oxides
Iron
Gases
Temperature
Scanning electron microscopy
Substrates
Hot Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Huh, Y., Lee, J. Y., Lee, T. J., Lyu, S. C., & Lee, C. J. (2002). Structure and field electron emission of carbon nanotubes dependent on growth temperature. In S. C. Moss (Ed.), Materials Research Society Symposium - Proceedings (Vol. 728, pp. 127-131)

Structure and field electron emission of carbon nanotubes dependent on growth temperature. / Huh, Yoon; Lee, Jeong Yong; Lee, Tae Jae; Lyu, Seung Chul; Lee, Cheol Jin.

Materials Research Society Symposium - Proceedings. ed. / S.C. Moss. Vol. 728 2002. p. 127-131.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Huh, Y, Lee, JY, Lee, TJ, Lyu, SC & Lee, CJ 2002, Structure and field electron emission of carbon nanotubes dependent on growth temperature. in SC Moss (ed.), Materials Research Society Symposium - Proceedings. vol. 728, pp. 127-131, Functional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques, San Francisco, CA, United States, 02/4/2.
Huh Y, Lee JY, Lee TJ, Lyu SC, Lee CJ. Structure and field electron emission of carbon nanotubes dependent on growth temperature. In Moss SC, editor, Materials Research Society Symposium - Proceedings. Vol. 728. 2002. p. 127-131
Huh, Yoon ; Lee, Jeong Yong ; Lee, Tae Jae ; Lyu, Seung Chul ; Lee, Cheol Jin. / Structure and field electron emission of carbon nanotubes dependent on growth temperature. Materials Research Society Symposium - Proceedings. editor / S.C. Moss. Vol. 728 2002. pp. 127-131
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