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Nature Photonics 3, 129–130 (1 March 2009) | doi:10.1038/nphoton.2009.15

Light-emitting diodes: Photonic crystal efficiency boost

Susumu Noda & Masayuki Fujita

LEDs directly convert electric energy into light, and over the years their efficiency has rapidly increased to become comparable to that of fluorescent lamps. But to harness their full potential for next-generation lighting, further increases in their quantum efficiency are required.