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Achieving Optimum LED Performance With Quantum Dots

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The use of quantum dots in combination with LEDs shows huge potential benefits for the lighting industry. The versatility and tunability of quantum dots can offer solutions when optimizing luminaire design for peak performance.

JAMES HARRIS AND DAVID WEBB, NANOCO TECHNOLOGIES LTD.

The invention of blue LEDs and the subsequent rapid rate of development of new phosphor and down-converting technologies have enabled the phenomenal growth of all LEDs in general lighting applications. White LEDs initially employed the use of a blue LED combined with a single phosphor with broad yellow emission. However, the light quality provided by this relatively simple solution was less than satisfactory, particularly in the red part of the visible spectrum. But more recently, new phosphors and phosphor combinations (green-yellow plus red) have been developed to provide a higher quality...Read full article

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    Published: July 2016
    Glossary
    quantum dots
    A quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties arise from the confinement of electrons within the dot, leading to discrete energy levels, or "quantization" of energy, similar to the behavior of individual atoms or molecules. Quantum dots have a size on the order of a few nanometers and can emit or absorb photons (light) with precise wavelengths,...
    color rendering index
    A CIE index describing the changes in color of standard test objects when the illumination is changed from a standard to a test illuminant.
    spectrum
    See optical spectrum; visible spectrum.
    EuropeLight Sourcesquantum dotsNanoco TechnologiesLEDscolor rendering indexspectrumJames HarrisDavid WebbFeatures

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