Gamma-Fe2O3/II-VI sulfide nanocrystal heterojunctions.
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.
Kwon
Kwan-Wook
KW
Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Shim
Moonsub
M