Hi,

If you use different dopants/additives in HTMs, it improves the conductivity of HTMs but at the same time, it reduces the air stability of HTM due to hygroscopic nature of mentioned additives. There is an option to solve above issue is to design either dopant-free HTMs or design air-stable additives/dopants.

Hi Jagadish,

Thank you for your valuable answer.

It is right if we add the dopant/additive improves the conductivity. In case of dopant free HTM, What happen if we add the additives (both on conductivity and morphology)? Do you have any experience for this case?

Hi, Randi,

Actually, I do not have experience in device fabrication. But, in my view, there are possible changes in morphology due to non-covalent interactions of additives with HTMs. For more details please find attached.

Dear Jagadish,

Thank you for valuable discussion. I had read that article from Prof. Nazeerudin in Nat. Energy. Actually, I read in some articles for dopant free HTM, if we add the additives make the poor morphology. I wanna check about the conductivity (mobility) affect on it.

But is this Dopant free HTM has potential to develop more since by putting additive doesn't help to improve it.

Dear Jagadish,

Thank you for valuable discussion. I had read that article from Prof. Nazeerudin in Nat. Energy. Actually, I read in some articles for dopant free HTM, if we add the additives make the poor morphology. I wanna check about the conductivity (mobility) affect on it.

But is this Dopant free HTM has potential to develop more since by putting additive doesn't help to improve it.