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Rational synthesis and tunable optical properties of quasialigned Zn1-xMgxO nanorods.
- Source :
-
Applied Physics Letters . 11/5/2007, Vol. 91 Issue 19, p193108. 3p. 2 Black and White Photographs, 3 Graphs. - Publication Year :
- 2007
-
Abstract
- Quasialigned, single-crystal Zn1-xMgxO (x=0–0.32) nanorods were synthesized on Si substrates by thermal evaporation. Zn1-xMgxO nanorods grew along the [0001] crystal direction and had uniform hexagonal planes with diameters of 420–120 nm. The predominant ultraviolet luminescence could be tuned from 379 (x=0) to 305 nm (x=0.32) at room temperature. This blueshift indicated the band gap engineering in Zn1-xMgxO nanorods. Temperature-dependent photoluminescence was used to illustrate the free-exciton emission from Zn1-xMgxO nanorods. The exciton binding energy decreased from 59 (x=0) to 49 meV (x=0.18) and then increased to 54 meV (x=0.32). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 91
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 27546489
- Full Text :
- https://doi.org/10.1063/1.2806939