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

Abstract

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
Volume1
Issue number10
DOIs
StatePublished - 2001

NREL Publication Number

  • NREL/JA-590-32023

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