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Direct observation of rapid discrete spectral dynamics in single colloidal CdSe-CdS core-shell quantum dots.
Phys. Rev. Lett. 111:177401 (2013)
We measure the anomalous spectral diffusion of single colloidal quantum dots over eight temporal decades simultaneously by combining single-molecule spectroscopy and photon-correlation Fourier spectroscopy. Our technique distinguishes between discrete and continuous dynamics and directly reveals that the quasicontinuous spectral diffusion observed using conventional spectroscopy is composed of rapid, discrete spectral jumps. Despite their multiple time scales, these dynamics can be captured by a single mechanism whose parameters vary widely between dots and over time in individual dots.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
ISSN (print) / ISBN
0031-9007
e-ISSN
1079-7114
Zeitschrift
Physical Review Letters
Quellenangaben
Band: 111,
Heft: 17,
Artikelnummer: 177401
Verlag
American Physical Society (APS)
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed
Institut(e)
Helmholtz Pioneer Campus (HPC)