Scattering of light by ZnO nanorod arrays

C. J. Pereyra, L. Campo, E. Navarrete-Astorga, A. Cuevas, R. Romero, D. Ariosa, RODRIGO GONZALO HENRIQUEZ NAVIA, EDUARDO CARLO MUÑOZ CARTAGENA, F. Martín, J. R. Ramos-Barrado, E. A. Dalchiele, R. E. Marotti

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)2360-2363
Number of pages4
JournalOptics Letters
Volume46
Issue number10
DOIs
StatePublished - 15 May 2021
Externally publishedYes

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