Synthesis and characterization of NiO- and Sn-doped NiO micro and nanostructures

M. Taeño; J. Ramírez-Castellanos; D. Maestre; A. Cremades

doi:10.1117/12.2552467

5 March 2020 Synthesis and characterization of NiO- and Sn-doped NiO micro and nanostructures

M. Taeño, J. Ramírez-Castellanos, D. Maestre, A. Cremades

Proceedings Volume 11281, Oxide-based Materials and Devices XI; 112810Z (2020) https://doi.org/10.1117/12.2552467
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

The use of NiO in low-dimensional devices requires appropriate synthesis methods allowing to control the morphology, size, and final composition of the as-grown samples in order to improve and broaden the applicability of this material in different fields of research. In this work, a vapor-solid and a hydrothermal method have been employed and evaluated for the fabrication of undoped and Sn doped NiO micro and nanostructures. The presence of Sn favours the growth of microwires, by means of thermal treatments at 1400 °C, while by using a hydrothermal process nanobars and nanoparticles with reduced dimensions were obtained. The chemical method leads to a higher control in the final concentration of Sn incorporated in the NiO lattice. X-ray diffraction confirms the crystalline quality of the obtained products, as well as a texture effects and peak-shift associated with the Sn doping process. Photoluminescence measurements demonstrate an increase in the luminescent signal promoted by Sn doping, related to the presence of Ni vacancies.

Conference Presentation

Citation Download Citation

M. Taeño, J. Ramírez-Castellanos, D. Maestre, and A. Cremades "Synthesis and characterization of NiO- and Sn-doped NiO micro and nanostructures", Proc. SPIE 11281, Oxide-based Materials and Devices XI, 112810Z (5 March 2020); https://doi.org/10.1117/12.2552467

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