Cathodoluminescence of single ZnO nanorod heterostructures
SCIE
SCOPUS
- Title
- Cathodoluminescence of single ZnO nanorod heterostructures
- Authors
- Piechal, B; Yoo, J; Elshaer, A; Mofor, AC; Yi, GC; Bakin, A; Waag, A; Donatini, F; Dang, LS
- Date Issued
- 2007-05
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- Optical properties of ZnO-based single nanorods are probed by cathodoluminescence (CL) measurements at T=5 K. We observe a variation of the ZnO near band edge CL by three orders of magnitude along the nanorod axis, accompanied by a spectral blueshift of 10-30 meV. This indicates a rather poor structural quality of the nanorod bottom part, close to the substrate. ZnO/ZnMgO quantum wells grown on top of ZnO nanorods are found to exhibit much stronger confinement effects as compared to their two-dimensional counterparts, suggesting a reduced spontaneous and piezoelectric polarization effects. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
- Keywords
- QUANTUM CONFINEMENT
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23382
- DOI
- 10.1002/PSSB.2006751
- ISSN
- 0370-1972
- Article Type
- Article
- Citation
- PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, vol. 244, no. 5, page. 1458 - 1461, 2007-05
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