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4210 CVU - More frequencies for C-f measurement

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BCornell
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4210 CVU - More frequencies for C-f measurement

Post by BCornell » October 20th, 2021, 12:02 pm

I am performing C-f measurements to investigate interfacial traps via the conductance method. For this its important to have enough data points to accurately determine the peak conductance. The software appears to only use the frequencies of 1,2,3....,9,10,20,30...90,100,200....900 kHz and 1,2,3...10 MHz. Limiting to ~37 data points. Is there a way to get more frequencies within the testing software? Attached is an example, with the current limitations I have to smooth data to infer the peak around 5 MHz
Gen2PtOx_B3_240umD_Cf_22.png
Gen2PtOx_B3_240umD_Cf_22.png (17.29 KiB) Viewed 211 times

Andrea C
Keithley Applications
Keithley Applications
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Re: 4210 CVU - More frequencies for C-f measurement

Post by Andrea C » October 22nd, 2021, 12:40 pm

The 4210-CVU has only those discrete 37 test frequencies in range of 1KHz to 10MHz. It’s 10 pts per decade.

The newer 4215-CVU has 1KHz resolution over the same 1KHz to 10 MHz so many more test freq. It also offers ACV amplitude up to 1V rms vs max 100mV rms with the 4210-CVU.

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