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

Author Correction: Photothermal effects control ultrafast charge transport in titanium carbide MXenes.

Nature communications·2026
Same author

Hot exciton dissociation in graphene nanoribbons.

Nature communications·2026
Same author

Chemical and physical equilibria shape dual ice-nucleation pathways in an organic crystal.

Communications chemistry·2026
Same author

Cyclophane-based shielding strategy for singly dispersed graphene nanoribbons.

Nature chemistry·2026
Same author

Design Principles for β-Solenoid Stability via Covalent and Electrostatic Capping Motifs.

The journal of physical chemistry letters·2026
Same author

One-Dimensional Materials Supported in Two-Dimensional Van der Waals Metal-Organic Frameworks with Optical Anisotropy Switching via Twist-Engineering.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Mar 1, 2026

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

9.3K

Boosting Biexciton Collection Efficiency at Quantum Dot-Oxide Interfaces by Hole Localization at the Quantum Dot

Hai I Wang1,2, Mischa Bonn1, Enrique Cánovas1

  • 1Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.

The Journal of Physical Chemistry Letters
|May 31, 2017
PubMed
Summary

Harvesting multiple excitons from semiconductor quantum dots (QDs) is key for efficient solar cells. Modifying QD surfaces with molecular caps boosts multiexciton collection (MEC) by 5-fold, suppressing recombination losses.

More Related Videos

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

9.6K
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

15.5K

Related Experiment Videos

Last Updated: Mar 1, 2026

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

9.3K
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

9.6K
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

15.5K

Area of Science:

  • Materials Science
  • Photovoltaics
  • Nanotechnology

Background:

  • Harvesting multiple excitons from semiconductor quantum dots (QDs) offers a route to exceed the Shockley-Queisser limit for solar cell efficiency.
  • While multiexciton generation (MEG) is well-studied, efficient collection of these multiple excitons at electrodes remains a significant challenge for practical devices.

Purpose of the Study:

  • To enhance multiexciton collection (MEC) efficiency at the PbS QD/mesoporous SnO2 interface.
  • To investigate the role of QD surface chemistry and molecular capping on exciton behavior and collection.

Main Methods:

  • Utilized PbS quantum dots with a molecular capping shell on a mesoporous SnO2 electrode.
  • Quantified multiexciton collection quantum yield under varying surface conditions.
  • Analyzed the impact of partial hole localization on Coulombic interactions and Auger recombination.

Main Results:

  • Achieved a 5-fold increase in MEC quantum yield, from approximately 15% to 80%.
  • Demonstrated that partial hole localization in the QD molecular capping shell significantly boosts MEC.
  • Showed that weakened Coulombic interactions reduce Auger recombination rates, suppressing competing biexciton Auger relaxation.

Conclusions:

  • Surface chemistry and energetics at QD/ligand interfaces are critical for efficient multiexciton extraction.
  • Molecular capping provides a viable strategy to design interfaces for enhanced multiexciton collection.
  • These findings offer design principles for improving solar cells and fuel generation systems utilizing MEG.