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Ultrapure Green Light from Perovskite Could Enrich Next-Gen Displays

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An ultrathin LED, as bendable as a sheet of paper and able to emit pure green light, has been developed using nanomaterials and simple room-temperature processes. Until now high-temperature processes have been required to produce pure light using LED technology. ETH chemical engineers have succeeded in producing what they believe to be the purest green light to date. Courtesy of ETH Zurich/Sudhir Kumar, Jakub Jagielski. Researchers from ETH Zurich used colloidal 2D perovskites — rather than indium gallium nitride — to convert the electrical current passing through the LED...Read full article

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    Published: September 2017
    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.
    perovskite
    The term perovskite refers to a specific crystal structure commonly found in various materials. Perovskite structures have a cubic arrangement of oxygen ions, forming a framework within which other cations (positively charged ions) are located. This crystal structure was named after the mineral perovskite, which has the chemical formula CaTiO3 and was first discovered in the Ural Mountains of Russia. The general formula for the perovskite structure is ABX3, where: A represents a larger...
    Research & TechnologyEuropeeducationDisplaysLEDsLight SourcesConsumernanoperovskitenanomaterialsTech Pulse

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