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Updated: Jul 10, 2026

Preparation of Large-area Vertical 2D Crystal Hetero-structures Through the Sulfurization of Transition Metal Films for Device Fabrication
Published on: November 28, 2017
Gamma-Fe2O3/II-VI sulfide nanocrystal heterojunctions
1Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Abstract:
Heterostructure nanocrystals (NCs) of gamma-Fe(2)O(3) and MS (M = Zn, Cd, Hg) are synthesized. The large lattice mismatch between gamma-Fe(2)O(3) and MS NCs leads to noncentrosymmetric structures. Crystallographic planes at the heterojunctions are identified by high-resolution transmission electron microscopy. Preferential formation of trimers and higher oligomers for ZnS and dimers or isolated particles for CdS and HgS with gamma-Fe(2)O(3) NCs are observed and explained by changes in the effective mismatch between the coincidence lattices of the most commonly observed junction planes.
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