I need to get a IV curve for dye sensitized solar cell (power in mV), but have no computational setup for this purpose. I know we must have DQC and electronic circuit and software.
I think Keithley is more expensive solution. You need a one computer controlled voltage source ( digital to analog convertor with amplifier output) and logartitmic current to voltage convertor (to measure current in a super wide range) and last items is at leeast two channel voltage data loger (two channel analog to digital convertor with having high resolution )
i may come later to your question. As your question is a basic one and we already developed a complete i-v measuring set up based on the DAQ cards, please refer to the paper in the link: Conference Paper Experimental Performance Characterization of Photovoltaic Mo...
For the software you can ask the first author of the paper.