Letian’s paper published on Science

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.

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This work is highlighted by Nature Nanotechnology, LBNL News, etc.