Dear Selva,

A humidity chamber is normally to control the level of oxygen and moisture inside the sealed environment, which is very different from a glove box that is filled with inert gas such as nitrogen or argon to remove oxygen and moisture. To fabricate a perovskite solar cell, you do need to have a glovebox not a humidity chamber.

Your question is whether you can make perovskite solar cells in the air. The answer is NO. You can make the cells at room temperature but you need to have a hot plate or vac uum oven to anneal films or cells after fabrication. Hope it helps.

Best wishes

Xuhua

It,s depends upon which type of perovskite are going to work, e.g all the bromide-based perovskite have batter stability but higher bandgap 2.3 eV.

Dear Xuhua Wang

Thanks for your answer, but can you clarify whether we can fabricate Pervoskite solar cell without glove box, ice) in the 50 to 70 % of humidity in the room temperature with the help of Vaccum oven and hot plate is it possible to fabricate?

Dear Selva

As far as i am aware of that majority of materials to make perovskite solar cells easily degrade in the air due to oxygen. It is very difficult to make such devices without accessing an inert gas environment. If you have relatively stable materials, you could try. The power efficiency wouldn't be good even if it just works. I would suggest to buy a simple notrogen filled glovebox if the budget is limited.

Best wishes

Xuhua

Thanks Xuhua wang, its very helpful to continue our work