Another beautiful work by Ajeet, entitled “Two-Dimensional Halide Pb-Perovskite–Double Perovskite Epitaxial Heterostructures” is published in JACS now, same day with Jee’s nature chemistry paper. What a day!
We report epitaxial core-shell heterostructures via growing Pb-free double perovskites (involving combinations of Ag(I)–Bi(III), Ag–Sb, Ag–In, Na–Bi, Na–Sb, and Na–In) around Pb perovskite 2D crystals. Interestingly, distinct from Pb–Pb and Pb–Sn perovskite heterostructures, growths of the Pb-free shell at 45° on the (100) surface of the lead perovskite core are observed in all Pb-free cases. Read the story here.
Letian Dou Group 