Fluorescence Intermittency in Single InP Quantum Dots
作者： Masaru Kuno , David P. Fromm , Alan Gallagher , David J. Nesbitt , Olga I. Micic
DOI: 10.1021/NL010049I
关键词: Quantum dot 、 Fluorescence intermittency 、 Physics 、 Electron 、 Molecular physics 、 Quantum mechanics 、 Photoionization 、 Fluorescence 、 Colloid 、 Trapping 、 Kinetics
摘要: Fluorescence “blinking” kinetics of isolated colloidal InP quantum dots (QDs) are investigated via confocal single molecule microscopy. Analysis 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 both times is inconsistent a static distribution electron/hole trapping sites highlights the role fluctuations QD nanoenvironment.
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