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 Concept Videos

You might also read

Related Articles

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

Sort by
Same author

[Pharmacokinetic study of Polydopamine Guttate Pills loaded with active components of Sarcandrae Herba in rats].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica·2022
Same author

Ginsenoside Rg5 allosterically interacts with P2RY<sub>12</sub> and ameliorates deep venous thrombosis by counteracting neutrophil NETosis and inflammatory response.

Frontiers in immunology·2022
Same author

Over-Expression of an R2R3 MYB Gene, <i>MdMYB108L</i>, Enhances Tolerance to Salt Stress in Transgenic Plants.

International journal of molecular sciences·2022
Same author

Structural Design and Testing of a Micromechanical Resonant Accelerometer.

Micromachines·2022
Same author

Closed-Loop Control and Output Stability Analysis of a Micromechanical Resonant Accelerometer.

Micromachines·2022
Same author

Association between Long-Term Changes in Dietary Percentage of Energy from Fat and Obesity: Evidence from over 20 Years of Longitudinal Data.

Nutrients·2022
Same journal

Engineered Young Brown Adipose Tissue-Derived Exosomes Alleviate Radiation-Induced Lung Injury by Promoting G Protein-Coupled Receptor 183 Ubiquitination.

ACS nano·2026
Same journal

Pore Geometry-Driven Capture of Trace Aromatic Volatile Organic Compounds in Al-Based MOFs.

ACS nano·2026
Same journal

Dual-Bridged Porphyrin-Based Covalent Organic Framework with Integrated Specific Fluorescent Recognition and Cooperative Adsorption Capabilities.

ACS nano·2026
Same journal

Split-Gate Memtransistors for Energy-Efficient Adaptive Reinforcement Learning.

ACS nano·2026
Same journal

Interface Coordination Nucleation of Copper Nanoclusters on Covalent Organic Frameworks for Electrocatalytic Ammonia Synthesis.

ACS nano·2026
Same journal

High-Performance Near-Infrared Quantum Emission from Color Centers in hBN.

ACS nano·2026
See all related articles

Related Experiment Video

Updated: May 4, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

17.5K

Small bright charged colloidal quantum dots.

Wei Qin1, Heng Liu, Philippe Guyot-Sionnest

  • 1James Franck Institute, The University of Chicago , 929 East 57th Street, Chicago, Illinois 60637, United States.

ACS Nano
|December 20, 2013
PubMed
Summary
This summary is machine-generated.

Negatively charged core/shell quantum dots (QDs) show suppressed blinking and bright trions. Optimal shell thickness maximizes negative trion lifetimes, enabling brighter charged QDs for light-emitting devices.

More Related Videos

Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

26.4K
Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
10:41

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

8.1K

Related Experiment Videos

Last Updated: May 4, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

17.5K
Production and Targeting of Monovalent Quantum Dots
10:16

Production and Targeting of Monovalent Quantum Dots

Published on: October 23, 2014

26.4K
Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode
10:41

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

8.1K

Area of Science:

  • Materials Science
  • Quantum Chemistry
  • Nanotechnology

Background:

  • Colloidal quantum dots (QDs) are crucial for optoelectronic devices.
  • Understanding multiexciton recombination dynamics is key to improving QD performance.
  • Charged excitons (trions) in QDs offer unique optical properties.

Purpose of the Study:

  • To investigate the fluorescence lifetimes of negatively charged CdTe/CdSe core/shell QDs.
  • To determine the effect of core size and shell thickness on trion and biexciton lifetimes.
  • To explore the suppression of Auger recombination in charged QDs.

Main Methods:

  • Electrochemical charge injection to create charged QDs.
  • Measurement of fluorescence lifetimes as a function of QD size and shell thickness.
  • Single-dot spectroscopy to analyze blinking and exciton/trion brightness.

Main Results:

  • Maximum negative trion lifetimes (~4.5 ns) observed at intermediate shell thickness for smallest QDs (~4.5 nm).
  • Negative charge suppresses blinking; trions can be as bright as excitons at room temperature.
  • Biexciton lifetimes show a monotonous increase with shell thickness, unlike trion lifetimes.

Conclusions:

  • Optimal shell thickness in CdTe/CdSe QDs enhances negative trion lifetimes by confining electron-hole overlap.
  • Suppression of Auger recombination in these small, negatively charged QDs is unprecedented.
  • Findings advance understanding of multiexciton recombination and guide design of efficient charged QDs for light-emitting devices.