Structural Diversity in Multicomponent Nanocrystal Superlattices Comprising Lead Halide Perovskite Nanocubes

Ihor Cherniukh, Taras V. Sekh, Gabriele Rainò, Olivia J. Ashton, Max Burian, Alex Travesset, Modestos Athanasiou, Andreas Manoli, Rohit Abraham John, Mariia Svyrydenko, Viktoriia Morad, Yevhen Shynkarenko, Federico Montanarella, Denys Naumenko, Heinz Amenitsch, Grigorios Itskos, Rainer F. Mahrt, Thilo Stöferle, Rolf Erni, Maksym V. KovalenkoMaryna I. Bodnarchuk

Research output: Contribution to journalArticlepeer-review


Nanocrystal (NC) self-assembly is a versatile platform for materials engineering at the mesoscale. The NC shape anisotropy leads to structures not observed with spherical NCs. This work presents a broad structural diversity in multicomponent, long-range ordered superlattices (SLs) comprising highly luminescent cubic CsPbBr3 NCs (and FAPbBr3 NCs) coassembled with the spherical, truncated cuboid, and disk-shaped NC building blocks. CsPbBr3 nanocubes combined with Fe3O4 or NaGdF4 spheres and truncated cuboid PbS NCs form binary SLs of six structure types with high packing density; namely, AB2, quasi-ternary ABO3, and ABO6 types as well as previously known NaCl, AlB2, and CuAu types. In these structures, nanocubes preserve orientational coherence. Combining nanocubes with large and thick NaGdF4 nanodisks results in the orthorhombic SL resembling CaC2 structure with pairs of CsPbBr3 NCs on one lattice site. Also, we implement two substrate-free methods of SL formation. Oil-in-oil templated assembly results in the formation of binary supraparticles. Self-assembly at the liquid-air interface from the drying solution cast over the glyceryl triacetate as subphase yields extended thin films of SLs. Collective electronic states arise at low temperatures from the dense, periodic packing of NCs, observed as sharp red-shifted bands at 6 K in the photoluminescence and absorption spectra and persisting up to 200 K.

Original languageEnglish
Pages (from-to)7210-7232
JournalACS Nano
Issue number5
Publication statusPublished - 2022


  • binary superlattice
  • collective properties
  • colloidal nanocrystals
  • electron microscopy
  • lead halide perovskites
  • nanocrystal shape
  • self-assembly

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Fields of Expertise

  • Advanced Materials Science


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