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On the polarized emission from exciton complexes in GaN quantum dots

S. Amloy ; K. F. Karlsson ; Thorvald Andersson (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; P. O. Holtz
Applied Physics Letters (0003-6951). Vol. 100 (2012), 2,
[Artikel, refereegranskad vetenskaplig]

The optical linear polarization properties of exciton complexes in asymmetric Stranski-Krastanov grown GaN quantum dots have been investigated experimentally and theoretically. It is demonstrated that the polarization angle and the polarization degree can be conveniently employed to associate emission lines in the recorded photoluminescence spectra to a specific dot. The experimental results are in agreement with configuration interaction computations, which predict similar polarization degrees for the exciton and the biexciton (within 10%) in typical GaN quantum dots. The theory further predicts that the polarization degree can provide information about the charge state of the dot.

Denna post skapades 2013-01-21. Senast ändrad 2015-07-02.
CPL Pubid: 171880


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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik



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