Temporal variation in photoluminescence from single InGaN quantum dots

Rice, James H.; Robinson, James W.; Jarjour, Anas; Taylor, Robert A.; Olier, Rachel A.; Briggs, G. Andrew D.; Kappers, Menno J.; Humphreys, Colin J.
May 2004
Applied Physics Letters;5/17/2004, Vol. 84 Issue 20, p4110
Academic Journal
We report measurements of optical transitions in single III/V (InGaN) quantum dots as a function of time. Temporal fluctuations in microphotoluminescence peak position and linewidth are demonstrated and attributed to spectral diffusion processes. The origin of this temporal variation is ascribed to randomly generated local electric fields inducing a Stark shift in the optical emission peaks of the InGaN quantum dots.


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