Title :
Formation of self-assembled cuprous oxide nano-dots on SrTiO3(001) surfaces
Author :
Lyubinetsky, I. ; Thevuthasan, S. ; McCready, D.E. ; Lea, A.S. ; Baer, D.R.
Author_Institution :
Pacific Northwest Nat. Lab., Richland, WA, USA
Abstract :
Formation of self-assembled crystalline cuprous oxide (Cu2O) nanoclusters on the SrTiO3(001) substrate have been observed using oxygen plasma assisted molecular beam epitaxy (OPA MBE). The composition and structure were examined by X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), X-ray diffraction (XRD), and atomic force microscopy (AFM) in a wide range of growth parameters (temperature, oxygen pressure, and Cu flux). The parameters were optimized to obtain Cu2O as a single phase in these structures. Understanding of the evolution of the dot shape, size and composition would allow us to optimize formation conditions to synthesize cuprous oxide nanodots with desirable parameters.
Keywords :
Auger electron spectra; X-ray diffraction; X-ray photoelectron spectra; atomic force microscopy; copper compounds; crystal structure; nanostructured materials; self-assembly; semiconductor materials; surface morphology; AES; AFM; Auger electron spectroscopy; Cu flux; Cu2O; SrTiO3; SrTiO3(001) substrate; SrTiO3(001) surfaces; X-ray diffraction; X-ray photoelectron spectroscopy; XPS; XRD; atomic force microscopy; cuprous oxide nanodots; dot composition; dot shape; dot size; growth parameters; nanoclusters; oxygen plasma assisted molecular beam epitaxy; oxygen pressure; self-assembly; Atomic force microscopy; Crystallization; Electrons; Molecular beam epitaxial growth; Plasma temperature; Plasma x-ray sources; Self-assembly; Spectroscopy; Substrates; X-ray diffraction;
Conference_Titel :
Nanotechnology, 2003. IEEE-NANO 2003. 2003 Third IEEE Conference on
Print_ISBN :
0-7803-7976-4
DOI :
10.1109/NANO.2003.1231000
