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1 March 2019 Characterization of ZnO and Fe doped ZnO nanoparticles using fluorescence spectroscopy
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Proceedings Volume 10919, Oxide-based Materials and Devices X; 109192P (2019) https://doi.org/10.1117/12.2510983
Event: SPIE OPTO, 2019, San Francisco, California, United States
Abstract
In this study, nanoparticles of pure zinc oxide (ZnO) and ZnO doped with iron of various doping concentrations (Zn1- xFexO) are analyzed using fluorescence spectroscopy. Excitation and emission spectra using various operating wavelengths were collected. Individual spectra and excitation emission matrix were analyzed. Various peaks including strong ultraviolet (UV) emission peaks and strong blue emission peaks that are corresponding to the near-band-edge emission (NBE) and defect emission (DE) peaks were studied based on the peak intensities, peak wavelengths, and NBE peak to defect peak ratios. The Zn1-xFexO materials were also analyzed using X-ray diffraction and optical absorption spectroscopy. The variation in the band gap energy and in the NBE emission energy with dopant concentration was analyzed. A red-shift was observed with the NBE emission peak. The NBE to DE ratio initially increases from pure ZnO to Zn0.97Fe0.03O and then decreases as the dopant concentration increases.
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Rahul Singhal, Mihiri Fernando, Peter K. LeMaire, and Binlin Wu "Characterization of ZnO and Fe doped ZnO nanoparticles using fluorescence spectroscopy", Proc. SPIE 10919, Oxide-based Materials and Devices X, 109192P (1 March 2019); https://doi.org/10.1117/12.2510983
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