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PI Physik Instrumente - Revolution In Photonics Align LW LB 3/24

New Blue-Emitting Material Is Lead-Free, Highly Efficient

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TOKYO, Sept. 21, 2018 — A novel photoluminescent, lead-free, zero-dimensional (0D) material, designed by scientists at Tokyo Institute of Technology, could be used to fabricate thin films for quantum dots (QDs) and other nanotechnologies. This is the crystalline structure of the proposed material. The green dots represent cesium atoms, and the blue bodies correspond to the (Cu2I5)3 units that are confined between them. The cesium atoms plus the (Cu2I5)3 units can be regarded as core-shell structures, which enhance the photoluminescent properties of the material. Courtesy of Advanced Materials. The fabricated...Read full article

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    Published: September 2018
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    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,...
    photoluminescence
    The state of optically excited luminescence. Luminescence refers to the light emitted by excited atoms or ions as they decay to lower energy levels.
    Research & TechnologyeducationTokyo Institute of TechnologyAsia-PacificLight SourcesMaterialsmaterials processingnanoquantum dotsphotoluminescenceblue lightzero-dimensional material

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