Ideally 1cm by 1cm. You could design various areas of your device layout such as 2mm by 2mm, 4mm by 4mm , 6mm by 6mm and 8mm by 8mm. Each pixel should have one pair. There is an advantage to use such design for research and development to understand the heat dissipation, edge effect and capacitance.

I am interested in this field and would like to obtain information

Dear Harpreet Singh ,

I could not understand your question precisely.

So, i will try to give a conceptual answer while not repeating the answer of Xuhua Wang .

In producing solar cells one would like to produce the largest area possible. This simply because the energy harvested is proportional to the active device area.

What would practically be the produced area:

It is the fabrication processes and fabrication apparatus that limits the size.

Also in case of developing phase of solar cells one may prefer to save material and restrict the size of the active area.

There is also the very known inhomogeneity and faults in the fabricated layers.

In order to reduce their effect one restricts the active area and produce multiple small active area cells called pixels as mentioned in the first post.

Best wishes

Hi dear

I think (0.5cm*0.5 cm) is standard active area for DSSC and other organic Solar cell

Thanks, Respected Abdelhalim abdelnaby Zekry and Xuhua Wang, your answers are quite helpful.

we do deposition on 2.5X2.5 cm substrate, then for IV measurement, we use a mask with a hole of area 0.113 cm2. so during measurement, our active area is only 0.113cm2.

It depends on your lab facility and setup, I used 1x1 cm², which is both feasible and precursor saving. You can see this video where my 1x1 cm² film has been fabricated.

https://youtu.be/QSTKY5IFTus

Thanks.