Formation of single-phase oxide nanoclusters: Cu2O on SrTiO3(100)
- 15 December 2003
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 94 (12), 7926-7928
- https://doi.org/10.1063/1.1625779
Abstract
Selective formation of the single-phase nanoclusters of Cu 2 O on SrTiO 3 (100) substrates in the size range of 10–50 nm is found to occur only in a very narrow oxygen plasma-assisted molecular-beam epitaxygrowth parameter window, in comparison with the bulk phase diagram (for oxygen pressure versus temperature). There are distinctive parameter regions, where multiple phaselike forms coexist ( CuO/Cu 2 O and Cu 2 O/Cu ), in agreement with theoretical prediction for small systems, and as opposite to the sharp phase boundaries for the bulk. Observed changes in the nanocluster composition are found to correlate with differences in cluster morphologies.Keywords
This publication has 20 references indexed in Scilit:
- Investigation of Copper(I) Oxide Quantum Dots by Near-Edge X-ray Absorption Fine Structure SpectroscopyChemistry of Materials, 2003
- Synthesis and properties of Cu2O quantum particlesJournal of Applied Physics, 2002
- Coherent island formation of Cu2O films grown by chemical vapor deposition on MgO(110)Journal of Materials Research, 2001
- Direct observation of d-orbital holes and Cu–Cu bonding in Cu2ONature, 1999
- Spontaneous ordering of nanostructures on crystal surfacesReviews of Modern Physics, 1999
- Surface melting descriptionProgress in Surface Science, 1998
- Cu2O as a photocatalyst for overall water splitting under visible light irradiationChemical Communications, 1998
- Mechano-catalytic overall water splittingChemical Communications, 1998
- Self-organized growth of quantum-dot structuresSemiconductor Science and Technology, 1996
- Bose-Einstein condensation of paraexcitons in stressedOPhysical Review Letters, 1993