Hello

you can also vary the deposition time and the temperature this will affect your optical properties and also using a dopants.

cordially

Yes, i agree with MELOUKI Mohamed comment. Spinning speed (if used spin coating),spinning time, annealing time and annealing temperature are the well known parameters those are affect the film properties electrical as well as optical.

Dear MELOUKI Mohamed,

Thank you for your suggestions. In addition to what you said, we can control it by changing nozzle-substrate distance, nature of precursor solution, and solution flow rate.