Thermodynamic aspects of the gas atmosphere & growth mechanism in carbothermal vapour phase transport synthesis of ZnO nanostructures
Saunders, Ruth B., McGlynn, EndaORCID: 0000-0002-3412-9035, Biswas, Mahua and Henry, Martin O.
(2010)
Thermodynamic aspects of the gas atmosphere & growth mechanism in carbothermal vapour phase transport synthesis of ZnO nanostructures.
Thin Solid Films, 518
(16).
pp. 4578-4581.
ISSN 0040-6090
The thermodynamic conditions of the Zn vapour in the growth atmosphere found in carbothermal reduction vapour phase transport growth of ZnO nanostructures are discussed. In typical growth conditions the Zn vapour is undersaturated and will only nucleate at energetically suitable accommodation sites such as Au-coated regions or ZnO buffer layers/seeds. We suggest that growth proceeds by Zn condensation at such sites and subsequent oxidation, consistent with experimental evidence that metal catalysts or pre-deposited ZnO nucleation points are required for ZnO nanostructure growth using carbothermal vapour phase transport.
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Funders:
Irish Research Council for Science, Engineering and Technology (IRCSET) Embark Postgraduate Research Scholarship., SFI-RFP, School of Physical Sciences, Dublin City University (DCU)
ID Code:
23273
Deposited On:
09 May 2019 10:46 by
Enda Mcglynn
. Last Modified 09 May 2019 10:46