I'd think the other way around - more roughness = more surface area = higher reaction rate.....

yes, it is related, fast deposition will lead to rough surface.

Dear Dr. Artavazd Kirakosyan : can you please site any article or book ??

@Sir Alan, Does that mean that in the chemical bath deposition process which is known to be an equilibrium method, a rough surface means the reaction rate was fast??

Any citation please.....

Dear colleague Arindam Mallick

Have a nice time and good day.

Peace be up on you, your question's readers and all RG members.

The attached paper is too important and deals directly with your topic.

I wish this is useful and help you.

Yours

A. El-Denglawey