Light-emitting diodes (LEDs) are the modern lighting devices used in lamps, signals, signs or displays. By contrast, organic semiconducting light-emitting materials (OLEDs) can be incorporated in thin layers and used on curved surfaces. However, OLEDs for large-area illumination are cost-intensive at present owing to their low efficiency and short lifetime.
from Latest Science News -- ScienceDaily http://ift.tt/1LYazOC via Karis World
from Latest Science News -- ScienceDaily http://ift.tt/1LYazOC via Karis World
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