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Surface characterisation and cathodoluminescent response of nanodot-patterned GaSb surfaces by low energy ion sputtering

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Plaza, J. L. and Hidalgo Alcalde, Pedro and Diéguez, E. (2007) Surface characterisation and cathodoluminescent response of nanodot-patterned GaSb surfaces by low energy ion sputtering. Journal of Physics: Conference Series, 61 . pp. 942-948. ISSN 1742-6588

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Official URL: http://dx.doi.org/10.1088/1742-6596/61/1/187


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Abstract

The scope of this paper is to analyse the effect of Au and Cr impurities, diffused onto GaSb substrates on the formation of nanodots created by LEIS using Ar+ ions It is concluded that oblique incidence in rotating configuration delays the formation of the nanodots compared to previously reported normal incidence experiments. The presence of cracks induced by the sputtering process has been observed both in the Au and Cr diffused samples. Cathodoluminescence (CL) spectra obtained in irradiated samples both pure and Cr-diffused have revealed no difference between them, showing the usual three band encountered in this material (Band Gap at 798 meV, A Band at 777 meV and tail-states at 815 meV). However, a fourth band has been detected in the Au sample centered at 769 meV.


Item Type:Article
Additional Information:

© 2007 IOP Publishing Ltd.
International Conference on Nanoscience and Technology (2006.Basel, Switzerland ).
This work has been supported by the Ministry of Education and Science of Spain under a Ramon y Cajal Contract, by the project MAT2003-09873 and by the project MEC (MAT 2003-00455)

Uncontrolled Keywords:Nanostructures
Subjects:Sciences > Physics > Materials
ID Code:25537
Deposited On:27 May 2014 17:12
Last Modified:27 May 2014 17:12

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