Letian, Andrew, and Yi’s work on 2D hybrid perovskites is published on Science.
Bulk crystals and thick films of inorganic-organic perovskite materials such as CH3NH3PbI3 have shown promise as active material for solar cells. Dou et al. show that thin films—a single unit cell or a few unit cells thick—of a related composition, (C4H9NH3)2PbBr4, form squares with edges several micrometers long. These materials exhibit strong and tunable blue photoluminescence.
This work is highlighted by Nature Nanotechnology, LBNL News, etc.
Letian Dou Group 