Characterizing quantum-dot blinking using noise power spectra

2004/04/23 by Matthew Pelton, David G. Grier, David Grier +2 · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Gold and Silver Nanoparticles Synthesis and Applications #Near-Field Optical Microscopy #Quantum Dots Synthesis And Properties #cond-mat.mes-hall #cond-mat.mtrl-sci

paper · pdf · doi:10.1063/1.1779356

arxiv created 2004/04/23 · openalex publication_date 2004/07/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Fluctuations in the fluorescence from macroscopic ensembles of colloidal semiconductor quantum dots have the spectral form of 1∕f noise. The measured power spectral density reflects the fluorescence intermittency of individual dots with power-law distributions of “on” and “off” times, and can thus serve as a simple method for characterizing such blinking behavior.

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• Power spectral density of a single Brownian trajectory: what one can and cannot learn from it
• Model of Fluorescence Intermittency of Single Colloidal Semiconductor Quantum Dots Using Multiple Recombination Centers