Electrochemistry Application — Stacked conductive metal–organic framework nanorods for high-performance vacuum electronic devices

4 measurement groups · 12 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

SI Table S2 field-emission benchmark comparison

Cu-CAT@GP field-emission device cathode · Electrode

Turn-on field and field-enhancement factor of Cu-CAT nanorods compared with recent reported 1D nanostructured emitters.

Geometry: comparison table
Context: Cu-CAT@GP field-emission device compared with literature emitters.
Measurement source: 8-9 / p008-p009 · Table S2 · Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu-CAT nanorods field enhancement factor in SI comparison tableMarked as a best value within this paper	29622	—	—	SI Table Exact Reported	9 / p009 · Table S2 · Table S2
Cu-CAT nanorods turn-on field in SI comparison tableMarked as a best value within this paper	0.59 V/um	—	—	SI Table Exact Reported	9 / p009 · Table S2 · Table S2

Field-emission current density versus applied electric field (J-E) in conventional diode-type measurement unit

Cu-CAT@GP field-emission device cathode · Electrode

Cu-CAT@GP cathode field-emission performance in a conventional diode-type unit under high vacuum (~1 x 10-4 Pa) at room temperature; turn-on field at 10 uA/cm2 and threshold field at 100 uA/cm2.

Temperature: room temperature
Atmosphere: high vacuum (~1 x 10-4 Pa)
Geometry: Cu-CAT@GP cathode opposite phosphor-coated FTO anode; cathode-anode distance 990 um.
Context: Composite/application device using conductive MOF nanorods on graphite paper.
Measurement source: text-only SI · Field emission properties test

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Approximate plotted current density near 1.03 V/um	about 400 uA/cm2 at about 1.03 V/um	—	—	Visual Estimate Approximate	5 / p005 · Figure 4 · Figure 4a
Field-emission test pressure	~1 x 10-4 Pa	—	—	Text Approximate	text-only SI · Field emission properties test
Field-emission threshold field at 100 uA/cm2Marked as a best value within this paper	0.81 V/um	—	—	Text Exact Reported	4 / p004 · Results and discussion · Figure 4a
Field-emission turn-on field at 10 uA/cm2Marked as a best value within this paper	0.59 V/um	—	—	Text Exact Reported	4 / p004 · Results and discussion · Figure 4a

Field-emission current stability test

Cu-CAT@GP field-emission device cathode · Electrode

Normalised current density over 120 min in high vacuum; devices held at pristine current density of 100 uA/cm2 for 2 h.

Temperature: room temperature
Atmosphere: high vacuum (~1 x 10-4 Pa)
Geometry: Cu-CAT@GP FED cathode.
Context: Composite Cu-CAT@GP field-emission device.
Measurement source: text-only SI · Field emission properties test

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Current fluctuation range	within +/-20%	0.2 fraction	—	Text Range	4 / p004 · Results and discussion · Figure 5a inset ii
Current attenuation over 2 hMarked as a best value within this paper	9.4%	0.094 fraction	—	Text Exact Reported	4 / p004 · Results and discussion · Figure 5a
Field-emission stability duration	120 min	2 h	—	Text Exact Reported	4 / p004 · Results and discussion · Figure 5a
Final current density after 120 min	90.6 uA/cm2	—	—	Text Exact Reported	4 / p004 · Results and discussion · Figure 5a
Initial stability-test current density	100 uA/cm2	—	—	Text Exact Reported	4 / p004 · Results and discussion · Figure 5a

Fowler-Nordheim field-emission analysis

Cu-CAT@GP field-emission device cathode · Electrode

Field enhancement factor beta calculated from the slope of the F-N plot using work function 5.84 eV.

Atmosphere: vacuum
Geometry: FED cathode based on Cu-CAT@GP; F-N plot in Figure S5.
Context: Composite Cu-CAT@GP field-emission device.
Measurement source: 4 / p004 · Results and discussion · Figure S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Field enhancement factor betaMarked as a best value within this paper	29622	—	—	Text Exact Reported	4 / p004 · Results and discussion · Figure S5