Atomically thin two-dimensional organic-inorganic hybrid perovskites

Letian Dou, Andrew Barnabas Wong, Yi Yu, Minliang Lai, Nikolay Kornienko, Samuel W. Eaton, Anthony Fu, Connor G. Bischak, Jie Ma, Tina X. Ding,

Science · 2015 · 1.4K citations · 29 references

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TL;DR

Flat perovskite crystals, such as CH₃NH₃PbI₃, have shown promise as active materials for solar cells and exhibit strong, tunable blue photoluminescence. Thin films of (C₄H₉NH₃)₂PbBr₄, only one to a few unit cells thick, form micrometer‑scale square domains. Dou et al., Science, p.

Abstract

Flat perovskite crystals Bulk crystals and thick films of inorganic-organic perovskite materials such as CH 3 NH 3 PbI 3 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, (C 4 H 9 NH 3 ) 2 PbBr 4 , form squares with edges several micrometers long. These materials exhibit strong and tunable blue photoluminescence. Science , this issue p. 1518

References

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