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Researchers Work to Bring Cheaper, ‘Greener’ LED Lighting to Market

Organic light emitting diodes (OLEDs) hold the promise of being both environmentally friendly and versatile. Though not as efficient as regular LEDs, they offer a wider range of material choices and are more energy efficient than traditional lights. OLEDs can also be applied to flexible surfaces, which may lead to lights or television displays that can be rolled up and stowed in a pocket. A promising line of research involves combining the OLEDs with inorganic quantum dots, tiny semiconductor crystals that emit different colors of light depending on their size. These “hybrid” OLEDs, also called quantum dot LEDs (QD-LEDs), increase the efficiency of the light-emitting devices and also increase the range of colors that can be produced. But commercially manufacturing this promising green technology is still difficult and costly.

www.ledjournal.com