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

Automated synthesis of InSb quantum dots with improved batch-to-batch reproducibility via kinetically matched co-reduction.

Nature communications·2026
Same author

Short-Chain Acids Sustain InAs Colloidal Quantum Dot Growth during Synthesis, Extending Spectral Response into the Deep Short-Wave Infrared.

Journal of the American Chemical Society·2026
Same author

Efficient Acidic CO<sub>2</sub> Electrolysis with Suppressed Crossover in a Separator-Based Membrane Electrode Assembly.

Journal of the American Chemical Society·2026
Same author

A High-Purity Ethylene Epoxide Stream Produced Using a Supported Electrocatalyst.

Journal of the American Chemical Society·2026
Same author

Crystalline Dion-Jacobson 2D Layered Sn-Based Perovskites for Field-Effect Transistors.

Journal of the American Chemical Society·2026
Same author

Triple-junction solar cells with improved carrier and photon management.

Nature·2026

Related Experiment Video

Updated: Dec 25, 2025

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

9.1K

A Chemically Orthogonal Hole Transport Layer for Efficient Colloidal Quantum Dot Solar Cells.

Margherita Biondi1, Min-Jae Choi1, Olivier Ouellette1

  • 1Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.

Advanced Materials (Deerfield Beach, Fla.)
|March 21, 2020
PubMed
Summary

Researchers developed a new hole-transport layer (HTL) for colloidal quantum dot (CQD) solar cells. This chemically orthogonal HTL improves charge extraction, boosting power conversion efficiency to 13.0%.

Keywords:
chemical orthogonalitycolloidal quantum dotshole transport layerssolar cellssurface ligands

More Related Videos

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

14.5K
Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices
11:06

Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices

Published on: July 8, 2016

10.8K

Related Experiment Videos

Last Updated: Dec 25, 2025

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

9.1K
Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids
13:29

Harvesting Solar Energy by Means of Charge-Separating Nanocrystals and Their Solids

Published on: August 23, 2012

14.5K
Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices
11:06

Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices

Published on: July 8, 2016

10.8K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Photovoltaics

Background:

  • Colloidal quantum dots (CQDs) offer solution-processing and tunable bandgaps for optoelectronic devices.
  • Optimizing CQD solar cell performance requires precise control over material interfaces.
  • Current top-performing CQD solar cells use a hole-transport layer (HTL) with 1,2-ethanedithiol (EDT) ligand exchange, which degrades active layer performance.

Purpose of the Study:

  • To identify the critical materials interface limiting colloidal quantum dot (CQD) solar cell performance.
  • To develop a novel, chemically orthogonal hole-transport layer (HTL) for CQD solar cells.
  • To enhance charge extraction and improve the power conversion efficiency of CQD photovoltaics.

Main Methods:

  • Combined elemental mapping with spatial charge collection efficiency measurements.
  • Developed a new HTL using malonic-acid-crosslinked CQDs.
  • Investigated the impact of the new HTL on charge carrier diffusion length and device performance.

Main Results:

  • Identified a key materials interface responsible for performance limitations in previous CQD solar cells.
  • The new malonic-acid-crosslinked CQD HTL preserves the underlying active layer's surface chemistry.
  • Achieved a 1.4x increase in charge carrier diffusion length in the active layer.
  • Improved power conversion efficiency to 13.0% compared to 12.2% for standard EDT-based cells.

Conclusions:

  • The developed chemically orthogonal HTL effectively addresses the detrimental effects of EDT ligand exchange.
  • This advancement in HTL strategy significantly enhances charge extraction and carrier diffusion in CQD solar cells.
  • The new approach offers a pathway to higher efficiency CQD photovoltaic devices.