Temperature-dependent optical phonon replicas characteristics of Mg Zn1−O alloy nanowires
| Autor: | Jun Zhang, Feihong Jiang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Photoluminescence
Materials science Phonon Exciton Alloy Biophysics Analytical chemistry Nanowire 02 engineering and technology engineering.material medicine.disease_cause 01 natural sciences Biochemistry 0103 physical sciences medicine 010302 applied physics business.industry General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Semiconductor engineering Optoelectronics Nanorod 0210 nano-technology business Ultraviolet |
| Zdroj: | Journal of Luminescence. 180:264-268 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2016.08.049 |
| Popis: | Mg x Zn 1− x O alloy nanowires have been synthesized through high temperature vapor-solid deposition process. The temperature-dependent optical phonon replicas characteristics of Mg x Zn 1− x O alloy nanowires under 10 K to 300 K were investigated. The results show that a strong near-band-edge (NBE) ultraviolet (UV) and multi-peak emissions situated at the region (about 3.4 eV ~ 3.0 eV) was observed under low temperature. The UV emission shows an obvious redshift with the increasing temperature. The multi-peaks emission has an energy periodicity about 70 meV. The oscillatory structure is mainly attributed to longitudinal optical phonon replicas of free exciton. The Mg composition can be estimated from the near-band-edge PL emission peak of Mg x Zn 1− x O alloy nanowires, in agreement with previously reported results for Mg x Zn 1− x O nanorods. |
| Databáze: | OpenAIRE |
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