On the thermal growth and properties of doped TiO2 and In2O3 elongated nanostructures and nanoplates

In this work, the driving forces behind the growth mechanisms of In2O3 and TiO2 micro- and nano-structures grown by an evaporation–solidification method are discussed. Effective or limited doping incorporation and its influence on the growth and morphology of the low dimensional structures are also...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2014-11, Vol.453, p.92-99
Main Authors: Cremades, A., Herrera, M., Bartolomé, J., Vásquez, G.C., Maestre, D., Piqueras, J.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth mechanisms
Materials science
Methods of nanofabrication
Nano- and microstructures
Optical and electronic properties
Physics
Transparent conducting oxides
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Summary:In this work, the driving forces behind the growth mechanisms of In2O3 and TiO2 micro- and nano-structures grown by an evaporation–solidification method are discussed. Effective or limited doping incorporation and its influence on the growth and morphology of the low dimensional structures are also assessed. A dislocation driven growth mechanism is proposed for indium oxide, indium tin oxide (ITO) and zinc doped indium oxide (IZO) nanowires. This growth mechanism is extended to the growth of IZO nano-plates. On the other hand, different low dimensional TiO2 morphologies, mainly nanowires, needles, and bidimensional leaf-like nanostructures, have been obtained by an anisotropic induced growth. By introducing Cr in the precursor mixture, needles are formed showing stepped lateral faces related to oxygen defect stoichiometry areas as observed by EDS mapping.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2014.02.004