원추형 기판 위에 탄소 나노튜브의 선택적 성장이 전계방출 특성에 미치는 영향

Effects of Selective Growth on Electron-emission Properties of Conical-type Carbon Nanotube Field-emitters

  • 김부종 (한양대학교 전자시스템공학과) ;
  • 노영록 (한양대학교 전자시스템공학과) ;
  • 박진석 (한양대학교 전자시스템공학과)
  • Kim, Bu-Jong (Dept. of Electronic Systems Engineering, Hanyang University) ;
  • Noh, Young-Rok (Dept. of Electronic Systems Engineering, Hanyang University) ;
  • Park, Jin-Seok (Dept. of Electronic Systems Engineering, Hanyang University)
  • 투고 : 2012.02.22
  • 심사 : 2012.03.15
  • 발행 : 2012.03.31

초록

In this study, for use of carbon nanotubes (CNTs) as a cold cathode of x-ray tubes, we examine the effects of selective growth of CNTs on their field emission properties and long-term stability. The selective growth of CNTs was performed by selectively etching the catalyst layer which was used for CNTs' nucleation. CNTs were grown on conical-type tungsten substrates using an inductively-coupled plasma chemical vapor deposition system. For all the grown CNTs, their morphologies and microstructures were analyzed by field-emission scanning electron microscope and Raman spectroscopy. The electron-emission properties of CNTs and the long-term stability of emission currents were measured and characterized according to the CNTs' growth position on the substrate.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단

참고문헌

  1. Maeda, Y., Komoriya, K., Sode, K., Higo, J., Nakamura, T., Yamada, M., Hasegawa, T., Akasaka, T., Saito, T., Lu, J., and Nagase, S., "Preparation and characterization of transparent and conductive thin films of single-walled carbon nanotubes", Nanoscale, Vol. 3, pp. 1904-1909, 2011 https://doi.org/10.1039/c0nr00940g
  2. Rowell, M. W., Topinka, M. A., McGehee, M. D., Prall, H. J., Dennler, G., Sariciftci, N. S., Hu, L., and Gruner, G., "Organic solar cells with carbon nanotube network electrodes", Applied Physics Letters, Vol. 88, pp. 233506, 2006 https://doi.org/10.1063/1.2209887
  3. Jung, H. Y., Jung, S. M., and Suh, J. S., "Horizontally aligned single-walled carbon nanotube field emitters fabricated on vertically aligned multi-walled carbon nanotube electrode arrays", CARBON, Vol. 46, pp.1345-1349, 2008. https://doi.org/10.1016/j.carbon.2008.05.020
  4. Liu, Z., Zhang, J., Yang, G., Cheng, Y,. Zhou, O,. and Lu, J., "Development of a carbon nanotube based microfocus x-ray tube with single focusing electrode", Review of scientific instruments, Vol 77, pp. 054302, 2006. https://doi.org/10.1063/1.2198793
  5. Sugie, H., Tanemura, M., Filip, V., Iwata, K., Takahashi, K., and Okuyama, F., "Carbon nanotubes as electron source in an x-ray tube", Applied physics letters, Vol. 78, pp. 2578-2580, 2001. https://doi.org/10.1063/1.1367278
  6. Kim, Y. K., Kim, J. P., Park, C. K., Yun, S. J., Kim, Won., Heu, Shin.,and Park, J. S., "Electron-emission properties of titanium carbide-coated carbon nanotubes grown on a nano-sized tungsten tip", Thin Solid Films, Vol. 517, pp. 1156-1160, 2008. https://doi.org/10.1016/j.tsf.2008.08.168
  7. Noh, Y. R., Kim, J. P., Chang, H. B., and Park, J. S., "Coating of carbon nanotubes with amorphous carbon nitride thin films and characterization of long-term emission stability", Thin Solid Films, Vol. 519, pp. 1636-1641, 2010. https://doi.org/10.1016/j.tsf.2010.08.163
  8. Park, J. S., Kim, J. P., Noh, Y. R., Jo, K. C., Lee, S. Y., Choi, H. Y., and Kim, J. U., "X-ray images obtained from cold cathodes using carbon nanotubes coated with gallium-doped zinc oxide thin films", Thin Solid Films, Vol. 519, pp. 1743-1748, 2010. https://doi.org/10.1016/j.tsf.2010.08.154
  9. Kim, J. P., Noh, Y. R., Kim, J. U., and Park, J. S., "Eelectron-emission properties of carbon nanotube micro-tips coated by amorphous carbon nitride films", Thin Solid Films, Vol. 519, pp. 7899-7903, 2011. https://doi.org/10.1016/j.tsf.2011.05.046
  10. Lee, J. A., Lee, J. W., Yoon, D. S., Paek, K. K., Lee, Y. H., and Ju, B. K., "Improvement of Field-Emission Properties of Screen Printed Carbon Nanotube Films via Argon Plasma Treatment", Journal of The Electrochemical Society, Vol. 153, pp. H111-H114, 2006. https://doi.org/10.1149/1.2186770
  11. Park, C. K., Kim, J. P., Kim, Y. K. Kim, Won., Kim, J. U., and Park, J. S., "Field-emission properties of carbon nanotubes grown on a submicron-sized tungsten tip in terms of various buffer layers", Diamond & Related Materials, Vol. 17, pp. 1826-1830, 2008 https://doi.org/10.1016/j.diamond.2008.01.105
  12. 김곤호, 양성채, "플라즈마 일렉트로닉스", 서울 교학사, 2006
  13. Yoon, S. M., Chae, J., and Suh, J. S., "Comparison of the field emissions between highly ordered carbon nanotubes with closed and open tips", Applied Physics Letters, Vol. 84, pp. 825-827, 2004. https://doi.org/10.1063/1.1645657