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Related Experiment Video

Updated: Jun 4, 2026

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

Enhanced quantum dot optical down-conversion using asymmetric 2D photonic crystals.

Fuchyi Yang1, Brian T Cunningham

  • 1Nano Sensors Group, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Micro and Nanotechnology Laboratory, Urbana, IL 61801, USA. fyang5@illinois.edu

Optics Express
|March 4, 2011
PubMed
Summary
This summary is machine-generated.

Asymmetric 2D photonic crystals with lead sulfide quantum dots boost optical down conversion efficiency. This technology improves light extraction and excitation, enhancing quantum dot emission and power conversion efficiency.

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Related Experiment Videos

Last Updated: Jun 4, 2026

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12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

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11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

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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

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Quantum dots (QDs) offer tunable light emission properties.
  • Enhancing light extraction and excitation in QD devices is crucial for efficiency.
  • Photonic crystals can manipulate light propagation and enhance light-matter interactions.

Purpose of the Study:

  • To fabricate asymmetric 2D photonic crystals embedded with PbS QDs on plastic substrates.
  • To enhance optical down conversion efficiency from blue to near-infrared wavelengths.
  • To investigate the effects of enhanced extraction and excitation on QD performance.

Main Methods:

  • Fabrication of asymmetric 2D photonic crystals using polymer-embedded PbS QDs.
  • Integration of photonic crystals onto flexible plastic substrates.
  • Characterization of optical properties, including emission enhancement and power conversion efficiency.

Main Results:

  • Demonstrated an 8x improvement in QD emission at normal incidence due to enhanced extraction.
  • Achieved a 2.5x improvement in power conversion efficiency from enhanced excitation.
  • Successfully utilized asymmetric 2D photonic crystals for efficient light manipulation.

Conclusions:

  • Asymmetric 2D photonic crystals with PbS QDs are effective for enhancing optical down conversion.
  • The developed approach significantly improves QD emission and power conversion efficiency.
  • This technology holds promise for advanced optoelectronic applications requiring efficient light management.