A-site cation in inorganic A$_3$Sb$_2$I$_9$ perovskite influences structural dimensionality, exciton binding energy, and solar cell performance

Published in Chemistry of Materials, 2018

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This is a primarily experimental paper which was led by my former postdoc mentor, Juan-Pablo Correa-Baena (now a professor at GA Tech!). He was having some interesting problems with phase impurities in the samples he was growing and I performed some DFT calculations to help explain the observations.