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

Enhanced Sensitivity in Neurotoxicity Detection via Cross-Correlation of Spectroscopical and Electrophysiological Features.

ACS omega·2026
Same author

A new beacon for optics: Light Office in Türkiye and its opening forum.

Light, science & applications·2026
Same author

Water filtration using softwood membranes provides a nature-based solution for nanoplastic removal.

Communications earth & environment·2026
Same author

The effect of psychoeducation program on hope, stress coping, and psychiatric symptoms in patients with Thalassemia major.

Archives of psychiatric nursing·2026
Same author

PEGylated Hemicyanine-Based Dual-Mode Phototherapy Platform with Robust Antibacterial and Antibiofilm Activity against High Priority Pathogens.

ACS applied bio materials·2026
Same author

Highly Selective H<sub>2</sub>S Gas Sensing Based on InAs-ZnSe Core-Shell Quantum Dots.

ACS sensors·2026

Related Experiment Video

Updated: Oct 31, 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

9.0K

Cadmium-Free and Efficient Type-II InP/ZnO/ZnS Quantum Dots and Their Application for LEDs.

Guncem Ozgun Eren1, Sadra Sadeghi2, Houman Bahmani Jalali1

  • 1Department of Biomedical Science and Engineering, Koç University, Istanbul 34450, Turkey.

ACS Applied Materials & Interfaces
|July 1, 2021
PubMed
Summary

Environmentally benign, cadmium-free type-II InP/ZnO/ZnS quantum dots (QDs) achieve high quantum yields (~91%). These efficient QDs demonstrate potential for advanced applications in bioimaging, displays, and lighting.

Keywords:
color conversionindium phosphideliquid LEDquantum dotstype-II band alignment

More Related Videos

Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications
10:56

Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications

Published on: February 6, 2016

14.2K
Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.4K

Related Experiment Videos

Last Updated: Oct 31, 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

9.0K
Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications
10:56

Synthesis of Cd-free InP/ZnS Quantum Dots Suitable for Biomedical Applications

Published on: February 6, 2016

14.2K
Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.4K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Quantum Dot Research

Background:

  • Type-II quantum dots (QDs) traditionally exhibit low quantum yield due to wavefunction separation.
  • Recent advances show high quantum yields in cadmium-based type-II QDs, driving the search for non-toxic alternatives.

Purpose of the Study:

  • To develop environmentally benign and highly efficient type-II quantum dots.
  • To investigate the structural and optical properties of InP/ZnO/ZnS core/shell/shell QDs.
  • To evaluate the performance of these QDs in light-emitting diode (LED) devices.

Main Methods:

  • Synthesis of InP/ZnO/ZnS core/shell/shell quantum dots using thermal decomposition and successive ionic layer adsorption.
  • Characterization using small-angle X-ray scattering (SAXS) to analyze structural changes.
  • Integration of QDs into liquid-state down-converters for blue light-emitting diodes (LEDs).

Main Results:

  • Achieved a high quantum yield of approximately 91% for the InP/ZnO/ZnS QDs.
  • Observed structural transformation from spherical to elliptical with ZnS shell growth via SAXS.
  • Demonstrated a 9.4% external quantum efficiency and 6.8% power conversion efficiency in QD-LEDs, setting a new record for type-II QD-LEDs.

Conclusions:

  • Cadmium-free type-II QDs can achieve high efficiency levels, challenging previous assumptions.
  • The developed InP/ZnO/ZnS QDs show significant promise for next-generation bioimaging, display, and lighting technologies.
  • This work paves the way for novel devices utilizing efficient and non-toxic nanomaterials.