Growth and Characterization of Mn Doped SnO2 Nanowires, Nanobelts, and Microplates

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• 作者：Manuel Herrera ; David Maestre ; Ana Cremades ; Javier Piqueras
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：May 2, 2013
• 年：2013
• 卷：117
• 期：17
• 页码：8997-9003
• 全文大小：465K
• 年卷期：v.117,no.17(May 2, 2013)
• ISSN：1932-7455

文摘

Undoped and Mn doped SnO₂ nanowires, nanobelts, and microplates have been grown by a thermal evaporation method that enables the morphology and the Mn content in the structures to be controlled. The structural and morphological characterization was carried out by scanning and transmission electron microscopy (SEM and TEM) and electron backscattered diffraction (EBSD). A crystallographic model has been proposed to describe the SnO₂:Mn microplates. X-ray photoelectron spectroscopy (XPS) and energy dispersive spectroscopy (EDS) demonstrated the incorporation of Mn into the SnO₂ lattice in concentrations up to 1.6 at % depending on the thermal treatment employed for the growth of the structures. Variations in the luminescence of the doped nanostructures as a function of the Mn content have been studied. A correlation between facets of the SnO₂:Mn microplates, identified by EBSD, with higher Mn content, and the increase of the luminescence emissions associated to oxygen vacancies related defects was demonstrated.