Published January 30, 2012
| Version v1
Journal article
Polarity-dependent photoemission spectra of wurtzite-type zinc oxide
Creators
- 1. NIMS Saint-Gobain Center of Excellence for Advanced Materials, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan)
- 2. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044 (Japan)
- 3. Synchrotron X-ray Station at SPring-8, NIMS, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)
- 4. Optical and Electronic Materials Unit, NIMS, 1-1 Namiki, Tsukuba 305-0044 (Japan)
- 5. Department of Materials Chemistry, Graduate School of Engineering, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo 184-8584 (Japan)
Description
The polar surfaces of wurtzite-type zinc oxide (ZnO) were characterized by x-ray photoemission spectroscopy to identify the origin of the polarity dependence of the valence band spectra. A characteristic sub-peak always appeared in the valence band spectra of the (0001) face regardless of the surface preparation conditions. It also appeared in the valence band spectra of the (1012) face, but only when the photoelectron take-off angle was parallel to the c-axis of ZnO. Our analysis demonstrates that this take-off angle dependency originates not from the surface state, photoelectron diffraction, or the presence of surfactants but from the crystal polarity.
Additional details
Identifiers
- DOI
- 10.1063/1.3673553;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 100
- Journal Issue
- 5
- Journal Page Range
- p. 051902-051902.3
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43112715
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Descriptors DEI
- BAND THEORY; CRYSTALS; CUBIC LATTICES; ELECTRON DIFFRACTION; ELECTRONIC STRUCTURE; PHOTOEMISSION; SEMICONDUCTOR MATERIALS; SURFACES; VALENCE; X-RAY PHOTOELECTRON SPECTROSCOPY; ZINC OXIDES
- Descriptors DEC
- CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; ELECTRON SPECTROSCOPY; EMISSION; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; SCATTERING; SECONDARY EMISSION; SPECTROSCOPY; ZINC COMPOUNDS
Optional Information
- Notes
- (c) 2012 American Institute of Physics