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Solar Cells Get Boost from Quantum Dots

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LOS ALAMOS, N.M. and MILAN, April 15, 2014 — The superior light-emitting properties of quantum dots can efficiently harvest sunlight and enhance solar energy, according to researchers from Los Alamos National Laboratory, in collaboration with the University of Milan-Bicocca, who say this could lead to development of windows that double as solar panels. Quantum dot luminescent solar concentrator devices under ultraviolet illumination. Images courtesy of Los Alamos National Lab. “The key accomplishment is the demonstration of large-area luminescent solar concentrators that use a new generation of specially engineered...Read full article

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    Published: April 2014
    Glossary
    cadmium sulfide
    An inorganic compound, yellow to orange in color, that fluoresces strongly enough when bombarded by a high-current-density electron beam to be used as a high-intensity light source.
    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,...
    absorption bandsAmericascadmium selenidecadmium sulfideCDsCdSeCenter for Advanced Solar PhotophysicsemissionenergyEnergy Frontier Research CenterEuropeItalyLos Alamos National LaboratoryNew MexicoOffice of Sciencephotovoltaicsquantum dotsResearch & Technologysolar panelsStokes-shiftUS Department of EnergyUniversity of Milan Bicoccapolymethylmethacrylate

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