Power-law carrier dynamics in semiconductor nanocrystals at nanosecond time scales

Details Power-law carrier dynamics in semiconductor nanocrystals at nanosecond time scales Power-law carrier dynamics in semiconductor nanocrystals at nanosecond time scales

2006-04-11

arxiv.org/abs/cond-mat/0604292v5

Physics

Condensed Matter

Other Condensed Matter

3 pages, 2 figures, compressed for submission to Applied Physics Letters

Scientific paper

We report the observation of power law dynamics on nanosecond to microsecond time scales in the fluorescence decay from semiconductor nanocrystals, and draw a comparison between this behavior and power-law fluorescence blinking from single nanocrystals. The link is supported by comparison of blinking and lifetime data measured simultaneously from the same nanocrystal. Our results reveal that the power law coefficient changes little over the nine decades in time from 10 ns to 10 s, in contrast with the predictions of some diffusion based models of power law behavior.

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