Can two-step method can be used on mesoporous structure to fabrication perovskite solar cell?

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Xuhua Wang

Dear Yiqiang Zhan,

Could you explain what the two step method is?

Thanks

Dr Wang

Yiqiang Zhan

Xuhua Wang Hi Xuhua, the two step method for fabricating perovskite is that we spin coat PbI2 first, then spin coat MAI at the second step. After an apropriate annealing, the MAPbI3 perovskite layer will be formed.

@Yiqiang Zhan

The two step method was proved inefficient for the cell performance a while ago due to the charge transport issue. If you are in doubt, you could do parallel experiments with mixing two materials and two step method to make perovskite solar cells.