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Red luminescence of Cr in ß-Ga_2O_3 nanowires

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Nogales Díaz, Emilio and García, José A. and Méndez Martín, Bianchi and Piqueras de Noriega, Javier (2007) Red luminescence of Cr in ß-Ga_2O_3 nanowires. Journal of Applied Physics , 101 (3). ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v101/i3/p033517_s1


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Abstract

Red luminescence emission from chromium doped ß-Ga_2O_3 nanowires has been studied by means of photoluminescence (PL) techniques. PL excitation shows several bands in the ultraviolet-visible region. Time decay values, obtained by time resolved PL, at different temperatures fit a three level model with thermal population of the upper level from the middle one. From the results, the origin of the emission is assigned to Cr^3+ ions in the ß-Ga_2O_3 host, and values for the energy level separation and Huang-Rhys factor of the broad^4T_2^(-4)A_2 emission are estimated.


Item Type:Article
Additional Information:

© 2007 American Institute of Physics.
This work has been supported by MEC Project No. MAT2003-00455 and UCM-CM Group 910146.

Uncontrolled Keywords:Oxide, Ruby, Radiation, Crystals, Emerald
Subjects:Sciences > Physics > Materials
ID Code:24347
Deposited On:28 Jan 2014 16:51
Last Modified:07 Feb 2014 11:16

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