Perfectly symmetrical 2D metal halide perovskite significantly improves energy transport in semiconductors

https://www.eurekalert.org/news-releases/1122760

"soft perovskite lattices distort, trapping energy/ reducing efficiency, overcome removing crystals from solution at high temperatures rather than allowing them to cool locking in highly ordered structure... allows exciton travel >2 μm without losing energy, order of magnitude better than previous perovskites... 1st time 3+ perovskite layers connected in chemically stable configuration using formamidinium cations at room temperature, allowing broader solar spectrum capture... tandem solar, quantum, ultra- sensors"