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Visible cathodoluminescence from nanocrystalline GaSb obtained by mechanical milling

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Borini, S. and Méndez Martín, Bianchi and Piqueras de Noriega, Javier (2003) Visible cathodoluminescence from nanocrystalline GaSb obtained by mechanical milling. Journal of Applied Physics , 94 (12). pp. 7729-7732. ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v94/i12/p7729_s1


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Abstract

The luminescence of mechanically milled GaSb has been investigated by means of cathodoluminescence (CL) in the scanning electron microscope. Transmission electron microscopy reveals that the GaSb powders obtained after the milling process contain nanocrystals with sizes of few nanometers. CL spectra of the GaSb powders show a bright blue-green luminescence visible to the naked eye, even at room temperature. Furthermore, a shift from blue to green has been observed depending on the milling time. In order to clarify the origin of this visible luminescence, we have performed a CL study on gallium oxide (Ga2O3) and antimony oxide (Sb2O3) powders, which exhibit several emission bands in the visible range. Comparison of these results with CL spectra from GaSb powders shows that oxidation during the milling process of GaSb plays an important role in the luminescence features observed.


Item Type:Article
Additional Information:

© 2003 American Institute of Physics.
This work is carried out in the framework of a European Marie Curie project (HPMT-CT-2001-00215). Support of MCYT (MAT2000-2119) is acknowledged.

Uncontrolled Keywords:Gallium Antimonide, Single-Crystals, Photoluminescence, Fabrication, Silicon, Films, Si
Subjects:Sciences > Physics > Materials
ID Code:24391
Deposited On:29 Jan 2014 16:18
Last Modified:20 May 2014 08:34

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