Electron source with CNT field-emitter cathode — Design and practical experience

AbstractThermal-stable, conductive, and flexible carbon fabric (CF), which is composed of thin carbon fibers prepared by electrospinning, was used for the substrate of carbon nanotube (CNT) field emitter arrays. The field emitter arrays were prepared by chemical vapor deposition (CVD). The current density-electric field characteristics revealed that the CNT field emitter arrays on CF produced a higher current density at a lower turn-on voltage compared to ones on a Si substrate. This emitter integrated with a gate electrode based on hierarchy-structured carbon materials, CNTs on CF, can be used for light sources, displays, and other electronic devices.

Download Full-text

A low-voltage, low-capacitance, vertical ruthenium–lithium–ruthenium sandwich layer thin-film-edge dispenser field emitter electron source

Applied Physics Letters ◽

10.1063/1.125060 ◽

1999 ◽

Vol 75 (16) ◽

pp. 2497-2499 ◽

Cited By ~ 6

Author(s):

David S. Y. Hsu ◽

Henry F. Gray

Keyword(s):

Thin Film ◽

Low Voltage ◽

Electron Source ◽

Field Emitter ◽

Layer Thin Film ◽

Low Capacitance

Download Full-text

Development of a LaB6 based ultra-bright cold field emitter electron source

2017 30th International Vacuum Nanoelectronics Conference (IVNC) ◽

10.1109/ivnc.2017.8051583 ◽

2017 ◽

Author(s):

Gopal Singh ◽

Robert Bucker ◽

Gunther Kassier ◽

R.J Dwayne Miller ◽

S. T. Purcell

Keyword(s):

Electron Source ◽

Field Emitter

Download Full-text

FABRICATION AND ELECTRON MICROSCOPY CHARACTERIZATION OF METAL-GATED CARBON NANOTUBE EMITTER ARRAYS

International Journal of Nanoscience ◽

10.1142/s0219581x06004826 ◽

2006 ◽

Vol 05 (04n05) ◽

pp. 579-583 ◽

Cited By ~ 1

Author(s):

JIANFENG WU ◽

LIFENG DONG ◽

JEREMY PETTY ◽

CHIACHING PAN ◽

JUN JIAO

Keyword(s):

Carbon Nanotube ◽

Focused Ion Beam ◽

Ion Beam ◽

Sol Gel ◽

Chemical Vapor ◽

Field Emitter ◽

Field Emitter Arrays ◽

Fe Catalyst ◽

Cnt Field Emitter ◽

Induced Decomposition

A technique was investigated for the fabrication of triode-type carbon nanotube (CNT) field emitter arrays, where an integrated extraction gate was built between the nanotube cathode and the anode. The gate improves the control capability of emission currents. To fabricate the metal-gated CNT field emitter arrays, well ordered cells were generated by focused ion beam (FIB) milling of platinum ( Pt ) coated silicon ( Si ) substrate and then modified by chemical etching. Two types of catalyst elements iron ( Fe ) and nickel ( Ni ), were used for growing the CNTs inside the cells. The methods for depositing catalysts into the cells include spin coating sol–gel Fe , FIB induced decomposition of ferrocene and sputter coating pure Ni . CNT growth was carried out by a chemical vapor deposition (CVD) process. The results suggest that the CNTs grew from inside the cells where the catalysts were located. In comparison, the CNTs synthesized from the sol–gel Fe catalyst were straighter than those from ferrocene Fe and pure Ni . The density and orientation of the CNTs in each cell are directly related to the type and quantity of the catalysts and are also affected by the size of the cells.

Download Full-text

Some «Exotic» Aspects of Physics With Microtips

MRS Proceedings ◽

10.1557/proc-558-521 ◽

1999 ◽

Vol 558 ◽

Author(s):

R. Baptist

Keyword(s):

Electron Beam ◽

Spatial Coherence ◽

Electron Injection ◽

Electron Source ◽

Rare Gas ◽

Field Emitter ◽

Microwave Amplifier ◽

Field Emitter Arrays ◽

Spin Polarized ◽

Single Emitter

ABSTRACTThis paper focuses on some experiments done using field emitter arrays (FEAs) produced at CEA-LETI, experiments which are outside of the display or microwave amplifier contexts. Among various studies done at CEA-LETI with FEAs we have selected:- the search towards a spin polarized electron source,- a study on the spatial coherence of the electron beam emitted by a single emitter,- the incorporation of an optical command in a FEA and finally,- the application of a FEA to electron injection into rare gas liquids.

Download Full-text