How to determine the target size for a specific sun simulator?

I am have to determine the I-V curves for a few solar cell samples. The sun simulator that I am going to use is PASAN 3b SunSim.

My Questions are:

What is the optimum solar cell sample size that I need to select?
What parameters will be effects if the sample size is not optimized?

The specifications of the external lamp are attached to this question.




Picture of How to determine the target size for a specific sun simulator?
Pasan 3b SunSim.jpg
Pasan External Lamp.jpg
Get a measure of the intensity distribution OF the simulator, over the field of interest.

The more samples the better, always. The trick is how FEW can you get away with to give you enough DOF to get an acceptable answer.

If a "few" is <100, then I'd automate the test, and run each cell at a time in the same place.

Steve