COMBINED FIELD ION AND FIELD ELECTRON EMISSION MICROSCOPY AND ENERGY-RESOLVED ATOM-PROBE SPECTROSCOPY OF Y Ba2 Cu3 O7-x

1988 ◽  
Vol 49 (C6) ◽  
pp. C6-453-C6-458
Author(s):  
N. ERNST ◽  
G. BOZDECH ◽  
A. J. MELMED
Keyword(s):  
Electron Emission ◽  
Atom Probe ◽  
Field Electron Emission ◽  
Field Electron ◽  
Emission Microscopy ◽  
Probe Spectroscopy

Properties of Si/Cs/O nanocluster thin films with negative electron affinity

1999 ◽  
Vol 558 ◽  
Author(s):  
L. N. Dinh ◽  
W. McLean ◽  
M. A. Schildbach ◽  
M. Balooch
Keyword(s):  
Thin Films ◽  
Field Emission ◽  
Electron Affinity ◽  
Electron Emission ◽  
Field Electron Emission ◽  
Negative Electron Affinity ◽  
Air Exposure ◽  
Field Electron ◽  
Emission Microscopy ◽  
Background Gas

ABSTRACTThin films of Si/Cs/O nanoclusters have been synthesized by the technique of supersaturated thermal vaporization of Si and Cs in an oxygen background gas. These films, which were deposited onto conducting or semiconducting substrates, exhibit negative electron affinity (NEA) as evidenced by ultraviolet photoemission spectroscopy (UPS). Photo and field electron emission properties of these nanocluster films were investigated with photo-electron emission microscopy (PEEM), field electron emission microscopy (FEEM), and current-voltage measurements. Flat cathodes covered with thin films of Si/Cs/O nanoclusters exhibited high current outputs and low turn-on fields. The films' NEA is unaffected by air exposure and is stable to high temperature annealing (550 TC). A field emission display unit with a simple diode structure containing a flat cathode coated with a patterned thin film of Si/Cs/O nanoclusters has also been built to demonstrate the potential application of this material in cold cathode electron emitting devices, particularly field emission flat panel displays.

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