Electrical Transport — High Thermopower in a Zn-Based 3D Semiconductive Metal-Organic Framework

Measurement evidence

Electrical Transport

High Thermopower in a Zn-Based 3D Semiconductive Metal-Organic Framework · Park J., Hinckley A.C., Huang Z. et al. · Journal of the American Chemical Society · 2020 · 20531-20535

2 measurement groups · 4 results

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

Conductivity stability assessment

Cold-pressed Zn-HAB pellet · Pellet

Pellets stored under vacuum or nitrogen glovebox; air exposure discussed via PESA-derived HOMO level.

Atmosphere
Vacuum or nitrogen (<0.1 ppm O2, <0.5 ppm H2O); air stability discussed
Geometry
Pressed pellet
Context
Pristine Zn-HAB pellet.
Measurement source
3 · Electrical properties
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Initial air-exposed conductivity activation energy190 meV0.19 eVText
Exact Reported
3 · Electrical properties

Van der Pauw conductivity from four-probe I-V curves

Cold-pressed Zn-HAB pellet · Pellet

LakeShore CRX-6.5K probe station; pressure below 2 x 10^-4 mbar; current swept -1.4 to +1.4 uA in 0.4 uA steps; resistances from linear regression of I-V curves.

Temperature
210-300
Atmosphere
Vacuum (<2 x 10^-4 mbar)
Geometry
Cold-pressed pellet on silicon wafer; four gold nanowires around pellet circumference contacted by tungsten probes.
Context
Pristine undoped Zn-HAB pellet.
Measurement source
S11 · Electrical measurements · Figure 4a
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Thermal activation energy under vacuumMarked as a best value within this paper170 meV0.17 eVText
Exact Reported
3 · Electrical properties · Figure 4a
Electrical conductivity at 210 Kapproximately 0.03 mS cm-1 at 210 K0.003 S m^-1Figure Axis
Approximate
3 · Electrical properties · Figure 4a
Room-temperature electrical conductivityMarked as a best value within this paper0.86 mS cm-1 at room temperature / 300 K0.086 S m^-1Text
Exact Reported
3 · Electrical properties · Figure 4a