Study of the properties of undoped and fluorine doped zinc oxide nanoparticles |
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Authors: | R Gonzalez-Hernandez C Falcony MI Pech-Canul |
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Affiliation: | a Unidad Saltillo, Cinvestav, Carr. Saltillo-Monterrey Km. 13, Ramos Arizpe, 25900, Mexico b Departamento de Física, Cinvestav, P.O. Box 14-7400, 7000 México, DF, Mexico c Instituto Peruano de Energía Nuclear, Av. Canadá 1470, Lima 41, Peru d Facultad de Ciencias, Universidad Nacional de Ingeniería, Av. Túpac Amaru 210, Lima, Peru |
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Abstract: | ZnO and ZnO:F nanoparticles were successfully prepared by precipitation in the presence of oxalic acid. This procedure yields ZnO and ZnO:F nano-arrangements of different lengths consisting of chains of quasi-spherical nanoparticles of ∼ 30 nm in size. Only the wurtzite ZnO structure was detected for both undoped and fluorine doped ZnO nanoparticles. By absorption and photoluminescence measurements, a diminishing of singly ionized oxygen vacancies was detected when fluorine is present in the nanoparticles; while a blue shift of the exciton absorption was observed. Additionally, by NIR reflectance measurements, the creation of free carriers by the fluorine doping of ZnO nanoparticles was observed. |
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Keywords: | ZnO F-doping Nanomaterials Optical properties |
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