Patterned selective growth of carbon nanotubes and large field emission from vertically well-aligned carbon nanotube field emitter arrays

Sohn, Jung Inn; Lee, Seonghoon; Song, Yoon-Ho; Choi, Sung-Yool; Cho, Kyoung-Ik; Nam, Kee-Soo
February 2001
Applied Physics Letters;2/12/2001, Vol. 78 Issue 7, p901
Academic Journal
We have grown well-aligned carbon nanotube arrays by thermal chemical vapor deposition at 800 °C on Fe nanoparticles deposited by a pulsed laser on a porous Si substrate. We also attain a selective growth of carbon nanotubes on a patterned Fe film on Si substrates in terms of pulsed laser deposition and a liftoff patterning method. Field emission measurement has been made on the carbon nanotube (CNT)-cathode diode device at room temperature and in a vacuum chamber below 10[sup -6] Torr. The distance between the CNT cathode and the anode is 60 μm and is kept through an insulating spacer of polyvinyl film. The measured field emitting area is 4.0x10[sup -5] cm[sup 2]. Our vertically well-aligned carbon nanotube field emitter arrays on the Si-wafer substrate emit a large current density as high as 80 mA/cm2 at 3 V/μm. The transmission electron microscope image shows that they are multiwalled and bamboolike structures and that the tips of some of the carbon nanotube emitters are open. The open tip structure of our CNTs and their good adhesion via Fe nanoparticles to the Si substrate are part of the reason why we can attain a large field emission current density within a low field. © 2001 American Institute of Physics.


Related Articles

  • Formation of self-assembled epitaxial nickel nanostructures. Zhou, H.; Kumar, D.; Kvit, A.; Tiwari, A.; Narayan, J. // Journal of Applied Physics;10/15/2003, Vol. 94 Issue 8, p4841 

    Highly orientated nickel magnetic nanoparticles were obtained by pulsed laser deposition technique on silicon (100) substrate using epitaxial titanium nitride film as the template. These nanoparticles have been characterized by conventional and high-resolution transmission electron microscopy,...

  • Effects of temperature oscillations on the growth of carbon nanotubes by chemical vapor deposition. Sun, L. F.; Xie, S. S.; Mao, J. M.; Pan, Z. W.; Chang, B. H.; Zhou, W. Y.; Wang, G.; Qian, L. X. // Applied Physics Letters;2/14/2000, Vol. 76 Issue 7 

    We have grown carbon nanotubes at oscillatory growth temperature by chemical vapor deposition. The high-resolution transmission electron microscopy (HRTEM) images show that they contain a number of incomplete carbon layers both on the outer and inner periphery and dislocations in the middle part...

  • Defect microstructures in epitaxial PbZr0.2Ti0.8O3 films grown on (001) SrTiO3 by pulsed laser deposition. Misirlioglu, I. B.; Vasiliev, A. L.; Alpay, S. P.; Aindow, M.; Ramesh, R. // Journal of Materials Science;Feb2006, Vol. 41 Issue 3, p697 

    Transmission electron microscopy has been used to investigate the character and distribution of the microstructural features in epitaxial (001) ferroelectric PbZr0.2Ti0.8O3 films grown on (001) SrTiO3 substrates by pulsed laser deposition. The TEM observations revealed that the films were...

  • Au-assisted growth approach for vertically aligned ZnO nanowires on Si substrate. Zhang, Guoqiang; Nakamura, Atsushi; Aoki, Toru; Temmyo, Jiro; Matsui, Yoshio // Applied Physics Letters;9/11/2006, Vol. 89 Issue 11, p113112 

    We have described a Au-assisted approach for growth of vertically aligned ZnO nanowires on Si substrate by metal-organic chemical vapor deposition. By employing an annealed Au/Si substrate, on which Au nanoislands are homogeneously distributed, vertically aligned ZnO nanowires on a Si substrate...

  • Growth of AlGaN nanowires by metalorganic chemical vapor deposition. Su, J.; Gherasimova, M.; Cui, G.; Tsukamoto, H.; Han, J.; Onuma, T.; Kurimoto, M.; Chichibu, S. F.; Broadbridge, C.; He, Y.; Nurmikko, A. V. // Applied Physics Letters;10/31/2005, Vol. 87 Issue 18, p183108 

    Growth of ternary AlGaN nanowires using metalorganic chemical vapor deposition is investigated. Structural, chemical, and optical characterization at nanoscopic scale is carried out by high resolution transmission electron microscopy, x-ray energy dispersive spectroscopy, and spatially resolved...

  • Rectangular Graphene Synthesis by CVD Method. Ali, Naushad; Ali, Daud; Ali, Farough // Journal of Applied Sciences Research;Mar2013, Vol. 9 Issue 3, p1277 

    Inspired by the recent concentric interest towards the graphene, this study is concerned to optimize the large scale synthesis with specific shape of this exciting nanomaterial. Few layered graphene of uniquerectangular shaped were synthesized by chemical vapor deposition (CVD) method using a...

  • Characterization of granular silicon, powders, and agglomerates from a fluidized bed reactor. Zbib, M.; Dahl, M.; Sahaym, U.; Norton, M.; Osborne, E.; Bahr, D. // Journal of Materials Science;Mar2012, Vol. 47 Issue 6, p2583 

    Growth of polycrystalline silicon from fluidized bed reactors (FBR) produces two general types of silicon products: granular material (diameters on the order of mm) and homogeneously nucleated material often called nanopowder (diameters in the range 10-100 nm). Nanopowder particles tend to be...

  • Excimer laser-induced surface fixation of polymer and its patterning. Nakayama, Yasuhide; Matsuda, Takehisa // Journal of Applied Physics;7/1/1996, Vol. 80 Issue 1, p505 

    Demonstrates laser chemical vapor deposition (LCVD) with the use of a bilayered film composed of an ultraviolet absorbing target polymer with a large alpha and an optically transparent substrate polymer. Formed polymer's infrared spectral features.

  • Pyrolytic LCVD of fibers: A theoretical description. Arnold, N.; Thor, E.; Kirichenko, N.; Bäuerle, D. // Applied Physics A: Materials Science & Processing;1996, Vol. 62 Issue 6, p503 

    The pyrolytic LCVD (Laser-induced Chemical Vapor Deposition) of fibers is studied theoretically. The shape of fibers and the temperature distribution are calculated self-consistently on the basis of a one-dimensional model which takes into account changes of the radius along the fiber. The...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics