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Cree smashes white LED record – again

The US-headquartered LED maker Cree has once again set a new benchmark for the efficacy of white-light production, with a laboratory demonstration of 231 lumens per watt – approximately a 10% improvement on the previous record. The result, achieved in standard conditions with a single-die component at room temperature and an operating current of 350 mA, beats the company’s previous best of 208 lm/W, which Cree announced in February 2010. Both emitters delivered so-called “neutral-white” light, with a correlated color temperature (CCT) of around 4500 K.

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