I recently read:
"The perovskite solution for the solvent quenching method (MAPI) recipe was prepared by dissolving 553.2 mg PbI2 and and 181.23 mg MAI in 1 ml anhydrous DMF/DMSO (4:1, v:v) to obtain a 1:0.95 molar ratio solution (PbI2:MAI) with a concentration of 42.96 wt %."
How can one get 553.2 mg of PbI2 and 181.23 of MAI (CH3NH3I) to be dissolved in 1 ml solution to obtain a 1:0.95 molar ration solution when the molar mass for PbI2 and MAI are 461.01 g/mol and 158.97 g/mol respectively.
I am confused. Thanks for the help in advance.
I highly agree with the opinion reported by Frank T. Edelmann
Regards
Dear Mike A. James, the molar masses of the two components you provided are correct, but the details in the procedure are also correct. The authors do not use 1 mmol of PbI2 but they use 1.2 mmol of PbI2 (553 mg) and 1.14 mmol of MAPI (181 mg), i.e. the two starting materials are employed in a molar ratio of 1:0.95.
Dear Mike A. James, your're very welcome. I hope your perovskite experiment was successful! 👍
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