Hello everybody!!
I am working on Perovskite solar cells. Recently I synthesized Pyrrolidine iodide alloyed MAPbI3 perovskite. I have a few questions regarding this aspect. In most of the papers on alloying quite larger cation into MAPbI3, there is the presence of lower angles in XRD and authors assign it to low dimensional perovskite formation. Is it always true? In my case, the deposited films turned to yellow colour after a few days. On performing XRD of this yellow phase I found two prominent peaks at 15 degrees and another at 29 degrees. I do not have software to identify these peaks. Though these peaks are observed in the mono and di-hydrate phase of MAPbI3, the intensity is not so high. Can Somebody please help me with this? It is quite urgent...
You should try the qualitative phase analysis software QualX2 http://www.ba.ic.cnr.it/softwareic/qualx/ together with the free structural database COD http://crystallography.net/cod/. With this you should be able to determine the phases. Best regards
Go through the articles in linked below,
https://cdn.intechopen.com/pdfs/48267.pdf
Oku, T., 2015. Crystal structures of CH3NH3PbI3 and related perovskite compounds used for solar cells. Solar Cells-New Approaches and Reviews, 1.
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