Fluorescence Intermittency in Single InP Quantum Dots

Masaru Kuno, David P. Fromm, Alan Gallagher, David J. Nesbitt, Olga I. Micic, Arthur J. Nozik

Research output: Contribution to journalArticlepeer-review

95 Scopus Citations


Fluorescence "blinking" kinetics of isolated colloidal InP quantum dots (QDs) are investigated via confocal single molecule microscopy. Analysis of fluorescence trajectories reveals inverse power law behavior (∞ 1/τm) in on/off time probability densities with mon ≈ 2.0(2) and moff ≈ 1.5(1). Such an inverse power law in both on/off times is inconsistent with a static distribution of electron/hole trapping sites and highlights the role of fluctuations in the QD nanoenvironment.

Original languageAmerican English
Pages (from-to)557-564
Number of pages8
JournalNano Letters
Issue number10
StatePublished - 2001

NREL Publication Number

  • NREL/JA-590-32023


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