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Electron emission from thin-film ferroelectric cathodes
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Electron emission from thin-film (<1 μm thick) ferroelectric cathodes has been investigated. The cathodes were made using sol-gel deposition and standard microelectronic patterning techniques and were excited using either dc or pulsed bias. Repeatable emission current densities up to 10 μA/cm2 were measured from 0.8-μm-thick lead-niobium-zirconium-titanate cathodes driven in the pulsed mode with switch voltages up to 22 V. Intermittent emission up to 20 mA/cm2 was measured for higher switch voltages. The dependence of emission current on switch voltage, grid dimensions, and extraction voltage will be presented.
Title: Electron emission from thin-film ferroelectric cathodes
Description:
Electron emission from thin-film (<1 μm thick) ferroelectric cathodes has been investigated.
The cathodes were made using sol-gel deposition and standard microelectronic patterning techniques and were excited using either dc or pulsed bias.
Repeatable emission current densities up to 10 μA/cm2 were measured from 0.
8-μm-thick lead-niobium-zirconium-titanate cathodes driven in the pulsed mode with switch voltages up to 22 V.
Intermittent emission up to 20 mA/cm2 was measured for higher switch voltages.
The dependence of emission current on switch voltage, grid dimensions, and extraction voltage will be presented.
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