Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-25T03:48:30.969Z Has data issue: false hasContentIssue false
  • English
  • Français

Carbon-Based Nanocomposite Materials For Cold Cathode Sources

Published online by Cambridge University Press:  01 February 2011

Alexander V. Karabutov ,
Viktor G. Ralchenko  and
Sergey K. Gordeev
Alexander V. Karabutov
Affiliation:
General Physics Institute, Vavilova str. 38, Moscow 119991, Russia (e-mail: lx@ran.gpi.ru)
Viktor G. Ralchenko
Affiliation:
General Physics Institute, Vavilova str. 38, Moscow 119991, Russia (e-mail: lx@ran.gpi.ru)
Sergey K. Gordeev
Affiliation:
Central Research Institute of Materials, Paradnaya str. 8, St-Petersburg 191014, Russia
Get access

Abstract

To find an alternative for CVD diamond films and carbon nanotubes for low-field electron emission sources and cold cathode applications, we have designed a novel class of nanomaterials with excellent field emission properties – dielectric/carbon nanocomposites, in which different insulating nanoparticles such as silicon oxide, boron nitride in cubic and hexagonal forms, and nanodiamond were used inside a pyrocarbon matrix. The thickness of pyrocarbon shells covering the dielectric particles can be controlled in a wide range during the CVD process. The best samples of the nanocomposites with all four kinds of dielectric material show excellent field emission properties with threshold fields of as low as 0.5–1 V/μm, good surface uniformity and long-term stability. An effect of post-growth treatment with oxygen and hydrogen plasma on the emission was also studied. A mechanism of the emission is discussed basing on quantum properties of nanostructured thin (two-dimensional) carbon covering the dielectric particles. The mechanism could be suitable for wide range of nanostructured sp2-bonded carbon objects.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 788: Symposium L – Continuous Nanophase and Nanostructured Materials , 2003 , L8.1
Copyright
Copyright © Materials Research Society 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Wang, C., Garcia, A., Ingram, D. C., Lake, M., and Kordesch, M. E., Electron. Lett. 27, 1459 (1991).Google Scholar
2. Geis, M. W., Efremov, N. N., Woodhouse, J. D., McAleese, M. D., Marchywka, M., Socker, D. G., and Hochedez, J. F., IEEE Electron Device Lett. 12, 456(1991).Google Scholar
3. Talin, A. A., Pan, L. S., McCarty, K. F., Felter, T. E., Doerr, H. J., and Bunshah, R. F., Appl. Phys. Lett. 69, 3842(1996).Google Scholar
4. Lacher, F., Wild, C., Behr, D., and Koidl, P., Diamond Relat. Mater. 6, 1111 (1997).Google Scholar
5. Karabutov, A. V., Frolov, V. D., Pimenov, S. M., and Konov, V. I., Diamond Relat. Mater. 8, 763 (1999).Google Scholar
6. Obraztsov, A. N., Pavlovskj, I.Yu., Volkov, A. P., Petrov, A. S., Petrov, V. I., Rakova, E. V., and Roddatis, V. V., Diamond Relat. Mater. 8, 814 (1999).Google Scholar
7. Iijima, S., Ichihashi, T., Nature (London) 363, 603 (1993).Google Scholar
8. Ebbesen, T. W., Carbon Nanotubes (CRC Press, 1997).Google Scholar
9. Frolov, V. D., Karabutov, A. V., Konov, V. I., Pimeniov, S. M., and Prokhorov, A. M., J. Phys. D: Appl. Phys. 32, 815 (1999).Google Scholar
10. Karabutov, A. V., Frolov, V. D., Konov, V. I., Diamond Relat. Mater. 10, 840 (2001).Google Scholar
11. Baumann, P. K. and Nemanich, R. J., Diamond Relat. Mater. 7, 612 (1998).Google Scholar
12. Ralchenko, V., Karabutov, A., Vlasov, I., Frolov, V., Konov, V., Gordeev, S., Zukov, S., and Dementjev, A., Diamond Relat. Mater. 8, 1496 (1999).Google Scholar
13. Karabutov, A. V., Frolov, V. D., Konov, V. I., Ralchenko, V. G., Gordeev, S. K., Belobrov, P. I., J. Vac. Sci. Technol. B19, 965 (2001).Google Scholar
14. Gordeev, S. K., in Nanostructured Carbon for Advanced Applications (Benedek, G., Milani, P. and Ralchenko, V.G. (eds), Kluwer, Dordrecht, 2001), p. 71.Google Scholar
15. Karabutov, A. V., Ralchenko, V. G., Vlasov, I. I., Gordeev, S. K., Korchagina, S. B., J. Vac. Sci. Technol. B21, 597 (2003).Google Scholar
16. Karabutov, A. V., Gordeev, S. K., Ralchenko, V. G., Korchagina, S. B., Lavrischev, S. V., Terekhov, S. V., Maslakov, K. I. and Dementjev, A. P., Diamond Relat. Mater. 12, in press (2003).Google Scholar