Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: May 28, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

Hole transfer from single quantum dots.

Nianhui Song1, Haiming Zhu, Shengye Jin

  • 1Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA.

ACS Nano
|October 4, 2011
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Polaron-mediated exciton dynamics of P(NDI2OD-T2) unveiled by transient absorption spectroscopy under electrochemical conditions.

The Journal of chemical physics·2026
Same author

Buried Interfaces in Organic Photocathodes for H<sub>2</sub> Evolution: Fermi-Level Pinning and Recombination.

ACS applied materials & interfaces·2026
Same author

Small-Molecule Additives Enhance Electric Double-Layer Performance in Ionic Liquids: Boosting Both Capacitance and Charging Rate.

The journal of physical chemistry letters·2026
Same author

Recent Advances in Thermo- and Photostabilities of Organic Solar Cells: Material Design and Morphology Control.

Polymer science & technology (Washington, D.C.)·2026
Same author

A Vibrational Probe of Electrical Doping in N2200 and Fermi-Level Alignment at Polymer Cathode/Metal Cocatalyst/Electrolyte Junctions.

Journal of the American Chemical Society·2026
Same author

Motion trajectory prediction of quadruped robots in complex terrain by improving the transformer temporal modeling algorithm.

Scientific reports·2026
Same journal

A pH-Tolerant Nickel-Vanadium Phosphonate Framework for Stable Aqueous Supercapacitor Cycling.

ACS nano·2026
Same journal

Reconfigurable Photoelectric Coaxial Fiber-Based Memristors for Neuromorphic Computing.

ACS nano·2026
Same journal

Multidimensional Emission Control of CsPbI<sub>3</sub> Quantum Dots Using Plasmonic Quasi-Bound States in the Continuum.

ACS nano·2026
Same journal

Reconfigurable 2D Floating-Gate Field-Effect Transistors with Graphene-Induced Interfacial Polarization for Unified Memory-Logic Integration.

ACS nano·2026
Same journal

Bioinstructive Hybrid Scaffold Integrating Phosphoinositide 3-Kinase-Akt and Complementary Survival Pathways for Kidney Regeneration.

ACS nano·2026
Same journal

Robust Quantum Cutting via Halide-Bearing Ligand Passivation and Gradient Halide Reconstruction for Ultrabroadband Ultraviolet-to-Near-Infrared Photodetection and Imaging.

ACS nano·2026
See all related articles

Photoinduced hole transfer from quantum dots (QDs) to phenothiazine (PTZ) molecules was investigated. This process influences QD blinking by increasing weakly emissive states, not affecting off-state statistics.

Area of Science:

  • Materials Science
  • Photochemistry
  • Quantum Dot Research

Background:

  • Quantum dots (QDs) exhibit unique photophysical properties crucial for optoelectronic applications.
  • Understanding charge transfer dynamics in QD-molecule systems is key to controlling their optical behavior.
  • Blinking dynamics in QDs are influenced by charge trapping and transfer processes.

Purpose of the Study:

  • To investigate photoinduced hole transfer dynamics from core/multishell QDs to phenothiazine (PTZ) molecules.
  • To analyze the static and dynamic heterogeneities of the hole transfer process.
  • To determine the effect of hole transfer on QD blinking dynamics.

Main Methods:

  • Single QD fluorescence spectroscopy was employed to study individual QD-PTZ complexes.

More Related Videos

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
15:47

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Related Experiment Videos

Last Updated: May 28, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
15:47

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

  • Ensemble-averaged transient absorption and fluorescence decay measurements provided bulk properties.
  • Analysis focused on fluorescence intensity, lifetime fluctuations, and blinking statistics.

    • Main Results:

    • Excitons in QDs dissociate via hole transfer to PTZ with a 50 ns time constant.
    • Charge recombination occurs on the 100-1000 ns timescale.
    • Single QD-PTZ complexes exhibit correlated fluorescence intensity and lifetime fluctuations.
    • Significant heterogeneities in average hole transfer rates were observed across different complexes.
    • Hole transfer increased the probability of weakly emissive "gray" states, with minimal impact on off-state statistics.

    Conclusions:

    • Photoinduced hole transfer dynamics are heterogeneous and dynamic in QD-PTZ systems.
    • The hole transfer process significantly alters QD emission pathways, favoring gray states over traditional off-states.
    • This study provides insights into controlling QD photoluminescence for advanced applications.