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Effect of laser irradiation on the luminescence of Mg and Si-doped GaN films

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Zaldivar, M.H. and Fernández Sánchez, Paloma and Piqueras de Noriega, Javier and Solís, J. (1999) Effect of laser irradiation on the luminescence of Mg and Si-doped GaN films. Journal of Applied Physics, 85 (2). pp. 1120-1123. ISSN 0021-8979

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Official URL: http://dx.doi.org/10.1063/1.369254


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Abstract

Pulsed laser treatments have been performed in GaN samples of both n- and p-type conductivity. The laser induced changes have been monitored by emissive mode and cathodoluminescence (CL) in a scanning electron microscope. Emissive mode observations indicate a moderate laser induced recrystallization. The luminescent emission has been characterized in both types of samples, GaN:Si and GaN:Mg. Whereas the evolution of CL in the Si doped samples could be explained by the occurrence of laser induced annealing, the luminescent behavior of the Mg doped samples upon irradiation seems to be more complex and a strong relation with the compensation or Mg activation is suggested. Several luminescence bands with maxima ranging from 3.3 to 2.7 eV and their dependence on irradiation conditions have been studied.


Item Type:Article
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© 1999 American Institute of Physics.
This work was supported by DGES (Project PB96-0639). M. H. Z. thanks AECI and CoNaCyT for a research grant.

Uncontrolled Keywords:Light-Emitting-Diodes, Iii-V Nitride, Thin-Films, Blue, Cathodoluminescence
Subjects:Sciences > Physics > Materials
ID Code:26365
Deposited On:29 Jul 2014 08:22
Last Modified:29 Jul 2014 08:22

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