Electrical Transport — Large Single Crystals of Two-Dimensional π-Conjugated Metal-Organic Frameworks via Biphasic Solution-Solid Growth

Measurement evidence

Electrical Transport

Large Single Crystals of Two-Dimensional π-Conjugated Metal-Organic Frameworks via Biphasic Solution-Solid Growth · Ha D.-G., Rezaee M., Han Y. et al. · ACS Central Science · 2021 · 104-109

6 measurement groups · 21 results

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

Conductivity survey of electron-beam and stencil-mask fabricated single-crystal devices

Ni-CAT-1 single-crystal electron-beam-lithography device · Electrode

Conductivity plotted versus crystal size for both fabrication methods; stencil-mask devices under vacuum, e-beam devices in ambient environment.

Temperature
room temperature
Atmosphere
Vacuum for stencil-mask samples; ambient for electron-beam samples
Geometry
Single-crystal devices made by electron-beam lithography or stencil mask
Context
pristine Ni-CAT-1 single-crystal devices
Measurement source
S16 · Figure caption · Figure S11
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Conductivity spread across devicesvaries by two orders of magnitudeCaption
Approximate
S16 · Figure caption · Figure S11D
Number of device samples in conductivity survey21 samplesCaption
Exact Reported
S16 · Figure caption · Figure S11D
Conductivity increase under vacuumincreases by one order of magnitude under vacuumCaption
Approximate
S16 · Figure caption · Figure S11D
Device fabrication yieldabout 50%Caption
Approximate
S16 · Figure caption · Figure S11

Hall-effect measurement from current-voltage slopes at each magnetic field

Ni-CAT-1 single-crystal basal-plane stencil-mask device · Electrode

Rxy obtained from Ixx-Vxy slope at each magnetic field; magnetic field swept forward and reverse; data averaged over 20 magnetic-field sweeps.

Temperature
room temperature
Atmosphere
Not specified
Geometry
Single-crystal Hall-bar-like four-contact basal-plane device
Context
pristine Ni-CAT-1 single crystal
Measurement source
S4 · Materials and Methods - Electrical measurement · Figure 4E-G; Figure S14
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Electron density from Hall coefficient(-1.4 +/- 0.42) x 10^19 cm-3+/- 0.42 x 10^19 cm^-3Text
Exact Reported
p005 · Results and Discussion
Carrier type inferred from Hall signn-type / electronText
Qualitative
p005 · Results and Discussion · Figure 4G
Hall coefficientMarked as a best value within this paper(-0.46 +/- 0.14) cm3/C+/- 0.14 cm3/CText
Exact Reported
p005 · Results and Discussion · Figure 4G
Hall mobility0.16 +/- 0.049 cm2/V sec+/- 0.049 cm^2/V/sText
Exact Reported
p005 · Results and Discussion · Table S1
Electron density as fraction of HHTP-site density1% of the HHTP-site densityText
Rounded Reported
p005 · Results and Discussion
Number of Hall magnetic-field sweep measurements20 magnetic-field sweep measurements (10 forward and 10 reverse)Text
Exact Reported
S4 · Materials and Methods - Electrical measurement

Temperature-dependent I-V characteristics and cool-down/warm-up conductivity

Ni-CAT-1 single-crystal basal-plane stencil-mask device · Electrode

Fig. S15 reports three crystal conductivities, cool-down/warm-up behaviour, and I-V curves at 300-100 K; cooling/heating rate 4 K/min.

Temperature
100-300 K
Atmosphere
Not specified
Geometry
Single-crystal devices; one e-beam-fabricated device included
Context
pristine Ni-CAT-1 single crystals
Measurement source
S20 · Figure caption · Figure S15
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Cool-down/warm-up temperature ramp rate4 K/minCaption
Exact Reported
S20 · Figure caption · Figure S15
Supplementary I-V temperature range100-300 KFigure Axis
Range
S20 · Figure · Figure S15C-D

Two-probe c-axis conductivity measurement

Ni-CAT-1 out-of-plane two-probe device · Electrode

Out-of-plane two-probe device image and I-V curve reported in SI.

Temperature
not specified, likely room temperature
Atmosphere
Not specified
Geometry
Two-probe out-of-plane device
Context
pristine Ni-CAT-1 crystal
Measurement source
S17 · Figure caption · Figure S12
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Out-of-plane c-axis conductivity1x10^-4 S/cmCaption
Exact Reported
S17 · Figure caption · Figure S12

Four-probe pressed-pellet conductivity and temperature dependence

Ni-CAT-1 pressed-pellet device · Pellet

Polycrystalline pressed pellet compared with single-crystal device; pellet prepared from powder pressed at 6.6 ton-force/cm2.

Temperature
300 K and temperature-dependent series
Atmosphere
Not specified
Geometry
Pressed-pellet device with gold wires and carbon paste
Context
pristine Ni-CAT-1 polycrystalline pellet control
Measurement source
p004 · Results and Discussion · Figure 4A
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Arrhenius activation energy, pressed pellet0.14 eVText
Exact Reported
p005 · Results and Discussion · Figure 4A
Pressed-pellet conductivity3.6 x 10^-3 S/cmText
Exact Reported
p004 · Results and Discussion · Figure 4A
Pressed pellet conductivity deficit versus single crystalslower by more than 2 orders of magnitudeText
Approximate
p005 · Results and Discussion

Four-probe and device conductivity measurement versus temperature; basal-plane single-crystal transport

Ni-CAT-1 single-crystal basal-plane stencil-mask device · Electrode

Conductivity measured with Agilent 4156C or Keithley 2400 plus Agilent 34401A; temperature dependence in LN2 cryo-probe station or He cryostat.

Temperature
300 K and temperature-dependent series
Atmosphere
Vacuum for stencil-mask devices in SI Fig. S11; Figure 4 conditions not fully restated
Geometry
Basal-plane single-crystal device, four electrical contacts; stencil-mask fabricated contacts
Context
pristine Ni-CAT-1 single crystal
Measurement source
p004 · Results and Discussion · Figure 4A; Figure S11
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Arrhenius activation energy, single crystal0.09 eVText
Exact Reported
p005 · Results and Discussion · Figure 4A
Average basal-plane single-crystal conductivityaverage of 0.8 S/cmstandard deviation 0.7 S/cmText
Rounded Reported
p004 · Results and Discussion · Figure 4A
Standard deviation of single-crystal conductivitystandard deviation of 0.7 S/cmText
Rounded Reported
p004 · Results and Discussion · Figure 4A
Peak basal-plane single-crystal conductivityMarked as a best value within this paperup to 2 S/cmText
Rounded Reported
p004 · Results and Discussion · Figure 4A
Representative Hall-table conductivity0.4 S/cmSI Table
Exact Reported
S26 · Table S1 · Table S1