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Rare-Earth Substitute Found for LEDs

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An abundant copper compound could replace rare-earth metals in household LEDs, making them more environmentally friendly. Most commercially available white LEDS are phosphor-based but incorporate rare earth metals like cerium. Researchers from Rutgers University developed another approach to white LEDs based on I-VII binary semiconductors, in particular copper iodide. The hybrid phosphor materials are free of rare-earth metals and can be synthesized by a low-cost, scalable solution process, the researchers said. Introduction of ligands allows the LEDs to be tuned to emit a warm...Read full article

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    Published: October 2014
    Light SourcesResearch & TechnologyAmericasNew JerseyRutgers UniversityLEDsrare earthlightingConsumerTech Pulse

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