One-dimensional cube-shape CoxZn1−xO nanostructures and their optical properties
| Autor: | Feihong Jiang, Jun Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Photoluminescence
Materials science Scanning electron microscope Phonon Exciton Nanowire 02 engineering and technology medicine.disease_cause 01 natural sciences Condensed Matter::Materials Science symbols.namesake 0103 physical sciences Materials Chemistry medicine 010302 applied physics business.industry Mechanical Engineering Metals and Alloys 021001 nanoscience & nanotechnology Full width at half maximum Mechanics of Materials symbols Optoelectronics 0210 nano-technology Raman spectroscopy business Ultraviolet |
| Zdroj: | Journal of Alloys and Compounds. 691:587-591 |
| ISSN: | 0925-8388 |
| Popis: | One-dimensional cube-shape CoxZn1−xO nanowires have been fabricated through vapor-solid deposition process. Scanning electron microscopy observations reveal that the products consist of a large quantity of cube-shape nanostructures with typical lengths in the range of several tens to several hundreds of micrometers. The room-temperature Raman spectra of CoxZn1−xO exhibited the presence of lattice defects in the system. The photoluminescence properties of CoxZn1−xO nanowires under 10 K–110 K were investigated. The results show that there is an intensive ultraviolet multi-peaks emission under low temperature. The multi-peak emissions are mainly attributed to longitudinal optical phonon replicas of free exciton. The multi-peaks emission in ultraviolet region will exhibit redshift with the increasing temperature. A U-shaped behavior of the full width at half maximum (FWHM) value of the FX-1LO emission peaks at 10 K–110 K was shown. |
| Databáze: | OpenAIRE |
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