Competitive Nucleation Mechanism for CsPbBr3 Perovskite Nanoplatelet Growth

• DOI: 10.1021/acs.jpclett.0c01794
• Publication Date: 2020-07-15T16:14:41Z
• Authors: Victor M. Burlakov; Yasser Hassan; Mohsen Danaie; Henry J. Snaith; Alain Goriely
• Keywords: Crystal (programming language)

We analyze nucleation-controlled nanocrystal growth in a solution containing surface-binding molecular ligands, which can also nucleate compact layers on the crystal surfaces. show that, if critical nucleus size for ligands is larger and nucleation barrier lower than those atoms, faster atoms relatively wide facets but much slower, at all, narrow facets. Such competitive of results covering predominantly wider facets, thus excluding them from process, acts as selection mechanism crystals with narrower so-called nanoplatelets. The theory confirmed by Monte Carlo simulations validated experimentally CsPbBr3 nanoplatelets grown solution. find that anisotropic controlled temperature strength surface bonding passivating ligands.