Cathodoluminescence from beta-Ga_2O_3 nanowires



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Nogales Díaz, Emilio and Méndez Martín, Bianchi and Piqueras de Noriega, Javier (2005) Cathodoluminescence from beta-Ga_2O_3 nanowires. Applied Physics Letters, 86 (11). ISSN 0003-6951

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ß-Ga_2O_3 nano- and microwires with diameters ranging from tens of nanometers to about one micron and lengths of up to tens of microns, have been obtained by sintering Ga_2O_3 powder under argon flow. The structures have been investigated by cathodoluminescence in the scanning electron microscope. The samples showed the violet-blue emission characteristic of Ga_2O_3 and a red emission at 1.73 eV dominant in the nanowires and other nano- and microstructures formed during the sintering treatment. At temperatures below 210 K, this band exhibits sharp peaks separated by 20 meV. This observation suggests the exchange of phonons in the recombination process.

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© 2005 American Institute of Physics.
This work was supported by the MEC project (MAT 2003-00455).

Uncontrolled Keywords:Luminescence
Subjects:Sciences > Physics > Materials
ID Code:24365
Deposited On:29 Jan 2014 15:44
Last Modified:07 Feb 2014 11:16

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