title: Correlation between fluorescence intermittency and spectral diffusion in single semiconductor quantum dots.
abstract: We find a correlation between the dynamics of fluorescence intermittency and spectral diffusion in the spectroscopy of single CdSe nanocrystal quantum dots (QD). A statistical analysis of the data suggests two populations of blinking events: blinking followed by large spectral diffusion shifts and blinking with small or no spectral shifts. Although unexpected from earlier studies, the correlation between blinking and spectral shifting is consistent with a model of QD ionization as the mechanism for the blinking event, followed by a redistribution of local electric fields that results in spectral shifting.
authors.affiliation: Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
authors.forename: R G
authors.initials: RG
authors.lastname: Neuhauser
authors.forename: K T
authors.initials: KT
authors.lastname: Shimizu
authors.forename: W K
authors.initials: WK
authors.lastname: Woo
authors.forename: S A
authors.initials: SA
authors.lastname: Empedocles
authors.forename: M G
authors.initials: MG
authors.lastname: Bawendi