Hi everyone, I have a question about the synthesis of NEA-based perovskites. We recently made MBA perovskites using the cooling crystallization method and it worked well and we got good crystals. But when we tried the same method for NEA, following the literature procedure and same concentration, we did not get the expected results. Instead of forming crystals, the mixture turned into a gel-like substance after adding NEA to the HI + PbO solution. I was expecting some solid precipitates upon adding NEA but that’s not what happened. I have checked my calculations multiple times and even got them double-checked by seniors but it still does not seem to work. I am not sure what’s going wrong, so any advice or suggestions would be really helpful.