Vu1, a local startup developing a new type of energy-efficient light bulb, said it has raised $5 million from investors to fund its development...

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Vu1, a local startup developing a new type of energy-efficient light bulb, said it has raised $5 million from investors to fund its development efforts.

Seattle-based Vu1 aims to market what it calls “electron stimulated luminescence,” which provides the same quality of lighting as traditional lightbulbs. Vu1’s technology doesn’t use mercury, a toxic element that is present in compact fluorescent lightbulbs, the most popular type of energy-efficient light bulb.

The company said it raised the money between August and November. The investors include existing investors and the company’s founders.

Ángel González: 206-515-5644 or agonzalez@seattletimes.com