Publikation: A simple low temperature synthesis route for ZnO-MgO core-shell nanowires
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2008
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Plank, Natalie O. V.
Snaith, Henry J.
Ducati, Caterina
Bendall, James S.
Welland, Mark E.
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Nanotechnology. 2008, 19(46), 465603. ISSN 0957-4484. eISSN 1361-6528. Available under: doi: 10.1088/0957-4484/19/46/465603
Zusammenfassung
We report a hydrothermal synthesis method for MgO shell coatings directly onto the surface of ZnO nanowire arrays. The entire process can be carried out below 100 °C. The MgO shells are produced by the addition of 10 mM magnesium nitrate with 0.2 M sodium hydroxide in water, resulting in a shell thickness of up to 8 nm, verified by high resolution transmission electron microscopy. The viability of the MgO layer as a functional element of optoelectronic devices was tested on solid-state organic hole-transporter based dye-sensitized solar cells. Incorporation of the MgO shell into the solar cell resulted in substantive efficiency improvements of over 400% in comparison to the pristine ZnO nanowire based photovoltaics, indicating that electrons can efficiently tunnel through the 'insulating' MgO shell.
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PLANK, Natalie O. V., Henry J. SNAITH, Caterina DUCATI, James S. BENDALL, Lukas SCHMIDT-MENDE, Mark E. WELLAND, 2008. A simple low temperature synthesis route for ZnO-MgO core-shell nanowires. In: Nanotechnology. 2008, 19(46), 465603. ISSN 0957-4484. eISSN 1361-6528. Available under: doi: 10.1088/0957-4484/19/46/465603BibTex
@article{Plank2008-11-19simpl-25306,
year={2008},
doi={10.1088/0957-4484/19/46/465603},
title={A simple low temperature synthesis route for ZnO-MgO core-shell nanowires},
number={46},
volume={19},
issn={0957-4484},
journal={Nanotechnology},
author={Plank, Natalie O. V. and Snaith, Henry J. and Ducati, Caterina and Bendall, James S. and Schmidt-Mende, Lukas and Welland, Mark E.},
note={Article Number: 465603}
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<dcterms:abstract>We report a hydrothermal synthesis method for MgO shell coatings directly onto the surface of ZnO nanowire arrays. The entire process can be carried out below 100 °C. The MgO shells are produced by the addition of 10 mM magnesium nitrate with 0.2 M sodium hydroxide in water, resulting in a shell thickness of up to 8 nm, verified by high resolution transmission electron microscopy. The viability of the MgO layer as a functional element of optoelectronic devices was tested on solid-state organic hole-transporter based dye-sensitized solar cells. Incorporation of the MgO shell into the solar cell resulted in substantive efficiency improvements of over 400% in comparison to the pristine ZnO nanowire based photovoltaics, indicating that electrons can efficiently tunnel through the 'insulating' MgO shell.</dcterms:abstract>
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