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8 NanoTech
8.9 CNT R-V Kelvin 2SMU: CNT R-V characteristics, Kelvin connection
(A.01.20)
[Supported Analyzer]
B1500A, 4155B, 4155C, 4156B, 4156C
[Description]
Measures the electric resistance of a CNT 2-terminal device and plots R-V (resistance vs voltage)
characteristics. This test is designed to apply a voltage between terminals of devices, measure a current and
calculate the resistance. Kelvin connection is used for connecting SMU to a device.
[Device Under Test]
Carbon Nano Tube FET, 2 terminals
[Device Parameters]
L: CNT length
D: CNT diameter
Temp: Temperature
[Test Parameters]
IntegTime: Integration time
Port1: SMU connected to resistor, primary sweep voltage output
V1Start: Sweep output start voltage
V1Stop: Sweep output stop voltage
V1Step: Sweep output step voltage
I1Limit: Port1 current compliance
Port2: SMU connected to resistor, constant voltage output
V2: Port2 voltage
[Extended Test Parameters]
HoldTime: Hold time
DelayTime: Delay time
Port1MinRng: Minimum range for Port1 current measurement
[Measurement Parameters]
Iport1: Port1 current
[User Function]
Circular constant PI=3.141592653589
Resistor terminal voltage DeltaV=Vport1-Vport2
Resistance R=DeltaV/Iport1
Sheet resistance Rsheet=R*((PI*D)/L)
[X-Y Plot]
X axis: Voltage DeltaV (LINEAR)
Y1 axis: Measured current Iport1 (LINEAR)
Y2 axis: Resistance R (LINEAR)
[List Display]
DeltaV: Input voltage
Iport1: Measured current
R: Resistance value
Rsheet: Sheet resistance
Agilent EasyEXPERT Application Library Reference, Edition 8
8-14