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Cathodoluminescence study of Te-doped ZnO microstructures grown by a vapour-solid process

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Iribarren, A. and Fernández Sánchez, Paloma and Piqueras de Noriega, Javier (2008) Cathodoluminescence study of Te-doped ZnO microstructures grown by a vapour-solid process. Journal of Materials Science, 43 (8). pp. 2844-2848. ISSN 0022-2461

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Official URL: http://dx.doi.org/10.1007/s10853-007-2384-1


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Abstract

Sintering of a mixture of TeO_2 and ZnO powders under an Ar flux leads to the formation of elongated Te-doped ZnO nano- and microstructures on the sample surface. The growth of the structures occurs via a vapour-solid process. Cathodoluminescence (CL) and energy dispersive spectroscopy (EDS) measurements show an inhomogeneous incorporation of Te along the growth axis of the structures. An enhancement of the band edge emission upon Te doping is attributed to the passivation of oxygen vacancies by Te atoms, which reduces the deep energy level-related recombination path.


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© Springer Science+Business Media, LLC 2008.
Acknowledgements One of the authors (A.I.) would like to thank MEC Spain and UCM for mobility financing and facilities under SAB2005-0018. This research was partially supported by Project MAT2006-01259.

Uncontrolled Keywords:Semiconductor Nanocrystals, Thin-Films, Photoluminescence, Luminescence, Deposition
Subjects:Sciences > Physics > Materials
ID Code:25843
Deposited On:16 Jun 2014 16:50
Last Modified:09 Jun 2016 14:39

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