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The next big thing in lighting could be glowing sheets that use half as much energy as an equivalent fluorescent fixture and can be laminated to walls or ceilings. The sheets will contain organic LEDs, or OLEDs—the same kind of technology used in some ultrathin TVs and smartphones.

OLEDs could be used in large sheets, because organic light-emitting molecules can be deposited over large surfaces. They also run cooler than LEDs, so they don’t require elaborate heat sinks, making a lighting structure simpler. OLED lighting is 10 to 100 times more expensive than conventional lighting, but as costs come down, it could eventually replace conventional fluorescent fixtures.

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