FERNÉE, Mark J.; PLAKHOTNIK, Taras; LOUYER, Yann; LITTLETON, Bradley N.; POTZNER, Christian; TAMARAT, Philippe; MULVANEY, Paul; LOUNIS, Brahim

doi:10.1021/jz300456h

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FERNÉE, Mark J.
lp2n-01,lp2n-12

PLAKHOTNIK, Taras
School of Mathematics and Physics [Brisbane]

LOUYER, Yann
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Journal of Physical Chemistry Letters. 2012-06-21, vol. 3, n° 12, p. 1716-1720

American Chemical Society

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Spectral diffusion of the emission line of single colloidal nanocrystals is generally regarded as a purely random process. Here we show that each new spectral position has a finite memory of previous spectral positions, as evidenced by persistent anti-correlations in time series of spectral jumps. The anti-correlation indicates there is a finite probability of the charge distribution around the nanocrystal returning to a previous configuration. We show both statistically and directly that this memory manifests as an observable spontaneous "relaxation" in the absence of a pump laser.< Leer menos

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CdSe nanocrystals

spectral diffusion

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Spontaneous spectral diffusion in CdSe quantum dots

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