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 Videos

Interplay between Auger and ionization processes in nanocrystal quantum dots.

Robert M Kraus1, Pavlos G Lagoudakis, Josef Müller

  • 1Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799 Munich, Germany.

The Journal of Physical Chemistry. B
|July 21, 2006
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

Interfacial Water Coordination on Ruthenium Oxide Nanoparticles Confined Within Covalent Organic Framework and Its Effect on Electrochemical Nitrate Reduction.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

What the Inheritance of IV-VI and II-VI Semiconductors Teaches Us for the Quest of Heavy Metal-Free Nanocrystals Dedicated to Infrared Detection.

Nano letters·2026
Same author

Perovskite-organic tandem solar cells with superior reverse-bias stability.

Nature materials·2026
Same author

Confining Metastable Wurtzite HgTe for Infrared Optoelectronics.

ACS nano·2026
Same author

Sunlight-Driven Fixation of CO<sub>2</sub> to Cyclic Carbonates Using Carbon Dots as a Photothermal Catalyst.

Exploration (Beijing, China)·2026
Same author

Defect-Driven Surface and Electronic Structure Modulation in Alloyed Bismuth Chalcogenide Nanosheets for CO<sub>2</sub> Reduction.

ACS nano·2026
Same journal

The Role of Functional Groups in Substituted Benzoic Acids Used as Dopants in Liquid Crystal Mixtures on the Nematic-Isotropic Transitions.

The journal of physical chemistry. B·2026
Same journal

Hyperfine Coupling Quantifies Hole Delocalization in Triarylamine Radical Cations of D-χ-A Molecules.

The journal of physical chemistry. B·2026
Same journal

A Solvatochromic-Chemometric Framework to Resolve Subtle Polarity Microenvironment Differences in Cycloalkanes Driven by Molecular Conformation and Substituent Effects: A Proof-Of-Concept for Advanced Aviation Fuel Design.

The journal of physical chemistry. B·2026
Same journal

Selective Effects of Backbone Cyclization and Disulfide Bonding as Global Covalent Constraints on the Conformational Ensemble of Sunflower Trypsin Inhibitor-1.

The journal of physical chemistry. B·2026
Same journal

Europium Coordination Structure in Peptide Complexes Resolved with Simulation and X-ray Absorption Spectroscopy.

The journal of physical chemistry. B·2026
Same journal

Competitive Coordination and Structural Evolution of Phenylalanine-Mg<sup>2+</sup> Complexes in Microaqueous Environments: Insights from DFT and Molecular Dynamics Simulations.

The journal of physical chemistry. B·2026
See all related articles

Strong electronic confinement in semiconductor quantum dots accelerates Auger recombination, leading to nonemissive states. This study quantifies Auger-assisted ionization rates in CdSe/ZnS nanocrystals.

Area of Science:

  • Materials Science
  • Quantum Chemistry
  • Solid State Physics

Background:

  • Semiconductor nanocrystal quantum dots (QDs) exhibit unique optical properties.
  • Auger recombination is a significant non-radiative decay pathway in QDs.
  • Understanding Auger effects is crucial for QD applications.

Purpose of the Study:

  • Investigate the interplay between Auger effects and ionization in confined CdSe/ZnS QDs.
  • Quantify the impact of excitation density on photoluminescence decay.
  • Develop a model for Auger-assisted ionization in the quantized regime.

Main Methods:

  • Spectrally resolved fluorescence decay measurements.
  • Controlled variation of excitation density.
  • Theoretical modeling of Auger processes.

Related Experiment Videos

Main Results:

  • Photoluminescence decay rate increases monotonically with excitation density.
  • Auger recombination accelerates ionization, populating dark QD states.
  • Estimated Auger-assisted ionization rates in the quantized regime.

Conclusions:

  • Auger recombination plays a key role in QD ionization under strong confinement.
  • The proposed model accurately describes experimental observations.
  • Insights into non-radiative processes in semiconductor nanocrystals.