Scattering of light by ZnO nanorod arrays
| Autor: | R. Romero, R. Henríquez, Eduardo Muñoz, Lucia Campo, Ricardo E. Marotti, Enrique A. Dalchiele, Ana Cuevas, Francisco Martín, C. J. Pereyra, J.R. Ramos-Barrado, Daniel Ariosa, Elena Navarrete-Astorga |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry Scattering Scanning electron microscope Mie scattering Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Light scattering 010309 optics Optics 0103 physical sciences Transmittance Nanorod Diffuse reflection 0210 nano-technology business Spectroscopy |
| Zdroj: | Optics letters. 46(10) |
| ISSN: | 1539-4794 |
| Popis: | The optical properties of ZnO nanorod (NR) arrays were investigated by optical total transmittance (TT) and diffuse reflectance (DR) spectroscopy in the visible region. The NRs were grown electrochemically in a three-electrode cell over a glass/fluorine-doped tin oxide (FTO) substrate. The mean length, radius, and density of NR samples were characterized by scanning electron microscopy. The results were correlated with the observed optical properties. Since light scattering for these NR arrays is highly dependent on their morphology, therefore, a model for light scattering based in the Mie theory for cylinders was implemented to understand the observed spectra. The mean scattering and extinction cross sections were calculated from the morphology of the samples. They were used to fit the DR spectra. From the fittings, the TT spectra of the samples could be calculated. A good agreement with the experimental results was obtained. This indicates that the implemented model represents well the observed scattering phenomena. |
| Databáze: | OpenAIRE |
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