Carbon nanotube electron emitters with a gated structure using backside exposure processes

Chung, Deuk Seok; Park, S. H.; Lee, H. W.; Choi, Jun Hee; N., S.; Kim, J. W.; Jang, Jae Eun; Min, Kyung Won; Cho, S. H.; Yoon, Moonsu; Lee, J. S.; Lee, C. K.; Yoo, Ji-Beom; Kim, Jong Min; Jung, Jae Eun; Jin, Y. W.; Park, Y. J.; You, Jung‐Min

doi:10.1063/1.1480104

Cited by 153 publications

(39 citation statements)

References 14 publications

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“…1 In addition, remarkable emission stability 2,3 and mechanical stiffness 4 make CNT's one of the promising candidates for use as tip materials in electronic applications. They have been recently applied to the cathode tips in the field emission display ͑FED͒ devices 5 and the probe tips in surface-analysis instruments. 6,7 The scanning tunneling microscope ͑STM͒ is based on vacuum tunneling phenomenon and is a powerful tool to study both the geometrical and electronic structures of surfaces.…”

Section: Introductionmentioning

confidence: 99%

Tip-functionalized carbon nanotubes under electric fields

et al. 2003

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We investigated the electronic structures of chemically modified carbon nanotube tips under electric fields using density functional calculations. Hydrogen, oxygen, and hydroxyl group-terminated nanotubes have been considered as field emitters or probe tips. In the case of the open-ended tubes, the field emission originates primarily from the dangling-bond states localized at the edge, whereas the pentagonal defects are the main source of the field emission in the capped tubes. The open-ended nanotube with a zigzag edge is an efficient field emitter because of the localized electronic states around the Fermi level and the atomic alignment of carbon-carbon bonds along with external electric fields. Tip functionalization alters the local density of states as well as the chemical selectivity of nanotubes in various ways. The correlations between atomic geometries of chemically functionalized tips and their electronic structures are further discussed. We propose that a hydrogen-terminated tube would be a promising probe tip for selective chemical imaging.

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Section: Introductionmentioning

confidence: 99%

Tip-functionalized carbon nanotubes under electric fields

et al. 2003

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“…[15] The electric-field strength in the cathode sheath has a function that can, to a first approximation, be taken as linear. Under such a linear approximation, the field can be expressed as Equation 3.…”

Section: Resultsmentioning

confidence: 99%

“…Carbon nanotubes (CNTs) have been studied for many different applications because of their exceptional electrical and mechanical properties, [1,2] and have already been shown to be useful for a variety of applications such as field-emission devices, [3,4] nanometer-scale electromechanical actuators, [5] field-effect transistors (FETs), CNT-based random access memory (RAM), and atomic force microscopy (AFM) probes. There has also been some research work demonstrating the potential of CNTs as nano-interconnections.…”

Section: Introductionmentioning

confidence: 99%

Electric‐Field‐Guided Growth of Carbon Nanotubes during DC Plasma‐Enhanced CVD

AuBuchon

Chen

Gapin

et al. 2006

Chemical Vapor Deposition

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Carbon nanotubes (CNTs) have been grown aligned with the directions of electric fields in a DC plasma-enhanced (DC PE) CVD process. The CNTs can be grown at various predefined angles with respect to the substrate. It is shown that the local electric field, even at the very surface of the substrates, can be inclined. The strength of the electric field inside the plasma sheath is estimated and the electric-field directions near the surface of Si substrate where the CNTs grow are modeled. By control of the directions of these electric fields, several novel CNT morphologies are demonstrated, which could be useful for various applications.

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“…[12] Application of CNTs has also been demonstrated as a field electron emitter sources in display devices due to the high current density at low turn-on voltage. [13] Field emission display devices are superior to thermionic-based devices because of low consumption power, low cost, cold cathode with no heating effect and long life. [14] The CNTs based microscopic devices possess single-electron emitter or low-current-density material, while high current density is required for X-ray tubes and display devices, [15] and achieving a high current density from CNTs is still a problem due to the limitation of synthesis technique.…”

Section: Introductionmentioning

confidence: 99%

Improved field emission properties of carbon nanotubes by dual layer deposition

Parveen

Husain

Kumar

et al. 2013

Journal of Experimental Nanoscience

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In this paper, we tried to increase the current density of carbon nanotubes (CNTs) by depositing double layer of CNTs instead of single layer. Both the layers of CNTs are deposited by the low pressure chemical vapour deposition technique on silicon substrate with Fe catalyst. Scanning electron microscopic images show the surface morphology of single and double layer of CNTs. Dual layer deposition of CNTs is a very simple and easy method to increase the current density of CNTs based field emitters than other conventional methods. Excellent field emission properties of double layer of CNTs are exhibited with large field enhancement factor and low turn-on voltage as compared to those for single layer of CNTs. High current density of CNTs is required for field-emission-based display devices associated with field enhancement factor and number of emitting electrons. Therefore, we may say that dual layer deposition of CNTs can be utilised as an alternative approach to improve the current density for field emitters. Stability measurement of the samples was also performed for 3 h (180 min) with current at constant applied voltage, and it was found that the stability of dual layer of CNTs is remarkable than that of single layer of CNTs.

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Carbon nanotube electron emitters with a gated structure using backside exposure processes

Cited by 153 publications

References 14 publications

Tip-functionalized carbon nanotubes under electric fields

Tip-functionalized carbon nanotubes under electric fields

Electric‐Field‐Guided Growth of Carbon Nanotubes during DC Plasma‐Enhanced CVD

Improved field emission properties of carbon nanotubes by dual layer deposition

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