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Low-Temperature Cathodoluminescence Investigations of High-Quality Zinc Oxide Nanorods

Published online by Cambridge University Press:  08 April 2015

Bartlomiej S. Witkowski ,
Lukasz Wachnicki ,
Sylwia Gieraltowska ,
Anna Reszka ,
Bogdan J. Kowalski  and
Marek Godlewski
Bartlomiej S. Witkowski*
Affiliation:
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
Lukasz Wachnicki
Affiliation:
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
Sylwia Gieraltowska
Affiliation:
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
Anna Reszka
Affiliation:
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
Bogdan J. Kowalski
Affiliation:
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
Marek Godlewski
Affiliation:
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland Department of Mathematics and Natural Sciences College of Science, Cardinal S. Wyszyński University, Dewajtis 5, 01-815 Warsaw, Poland
*
*Corresponding author. [email protected]
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Abstract

We present results of cathodoluminescence (CL) investigations of high-quality zinc oxide (ZnO) nanorods obtained by an extremely fast hydrothermal method on a silicon substrate. A scanning electron microscopy (SEM) system equipped with CL allows direct comparison of SEM images and CL maps, taken from exactly the same areas of samples. Investigations are performed at a temperature of 5 K. An interlink between sample microstructure and emission properties is investigated. CL confirms a very high quality of ZnO nanorods produced by our method. In addition, the presence of super radiation effects in ZnO nanorod arrays is suggested.

Keywords

zinc oxidecathodoluminescencenanorodssuper radiation
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 21 , Issue 3 , June 2015 , pp. 564 - 569
Copyright
© Microscopy Society of America 2015 

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