As I know, to take IMPS and IMVS for a dye sensitized solar cell or OPVs, you should use Zahner zennium electrochemical workstation.
There are some papers from Janne Halme describing this. If I remember properly, he used just Autolab. Otherwise you can ask directly to Metrohm. Martin Von Brussels from Metrohm can really help.
You should ask Metrohm company, they having Autolab with attached new version of softwares for taking IMPS and IMVS for measure DSSC.
Dear brother,
Firstly, Intensity‑modulated photocurrent spectroscopy and intensity‑modulated photovoltage spectroscopy can offer valuable information about dye solar cells (DSCs). IMPS and IMVS yield time constants which are related to the electron transport and electron recombination. Both parameters can be used to calculate the diffusion coefficient and the diffusion length, among others. So, If you need estimate the IMPS and IMVS should understand the EIS principle and a good device of measure it.
Regards,
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