2013年12月1日星期日

1st Pulsed CV measurement (Some Analysis)

For pulsed CV measurement,

The whole figure of input voltage is shown below, since the pulsed measurement is very fast, each pulse lasts for about 200us , it is not clear to display results in one graph, so the results will be shown in segmentations.

input voltage plot

For the first segment, the input voltage and output voltage are plotted below:
First segment
In pulsed CV measurement, the output voltage is proportional to capacitance of the sample (the load resistor is relatively small). The above figure generally displays the shape of a CV plot. A detailed calculation for capacitance can be found here:

Some CV plots are shown below:

Segment 1:
segment 1 first down pulse


segment 1 first up pulse


segment 1 second down pulse

Segment 7:
segment 7 up pulse


segment 7 down pulse



Segment 13:
segment 13 up pulse
segment 13 down pulse




Segment 19:


segment 19 up pulse
segment 19 down pulse

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