World’s Most Affordable Solar Light Bulb
News from EarthTechling:

Nokero International, LLC today announced the launch of an ultra-efficient solar light bulb, the N182, which maximizes brightness and minimizes retail cost. At twice the brightness of the previous N180 model, Nokero’s latest design utilizes the highest efficacy LED, a radically redesigned circuit board, and a cost-effective solar panel.

Nokero’s launch of the N182 solar light bulb coincides with the four-year anniversary of the company, a celebration of Colorado Companies to Watch, and the Colorado Energy Expo. The product is now available to the public, after being showcased this month by LED partner Seoul Semiconductor at the world’s largest commercial lighting tradeshow, and by emerging thought leaders at the Sustainable Brands Conference. Together, Nokero and Seoul Semiconductor demonstrate that LEDs do not just provide light, but will actually change the world through an ultra-affordable product that can provide light for the 1.3 billion people without electricity.

Nokero’s CEO, Steve Katsaros, says: “The ultra-efficient Seoul Semiconductor mid-power 5630 LED is a game-changer for our solar light bulb. Every 5% of improved efficacy means either 5% longer run time or a 5% increase in brightness, which in turn enables products like the Nokero solar light bulbs to change lives at the base of the economic pyramid.”

The N182 is an improv…………… continues on EarthTechling

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A better light bulb: Pyramid scheme for brighter organic LEDs
News from U of M News Service:

ANN ARBOR—The most common kind of light bulb in the United States—the incandescent—is only about 5 percent efficient. The phosphorescent organic light-emitting diode, on the other hand, makes light out of 100 percent of the electricity that goes into it.

They’re good for smartphone screens and mood lighting, but they drop off in both efficiency and lifetime when they have to shine brightly.

University of Michigan researchers have found an elegant way to get around this problem—by arranging the PHOLEDs into a pyramid.

“Achieving extra brightness from the conventional, flat design is inefficient and shortens the device lifetime,” said Jaesang Lee, a doctoral student in electrical engineering and computer science and first author of the study. “However if we integrate our PHOLEDs into a pyramidal shape, we are able to achieve the equivalent, concentrated brightness at a much lower electrical current.”

Because of their high efficiencies, PHOLEDs already claim much of the smartphone display market, and they are edging into televisions and ambient lighting. But when it comes to illuminating tasks like reading and detailed work, they face a disadvantage: their efficiencies and life expectancies drop off sharply when they have to shine very brightly. This happens because the easiest way to make an LED brighter is to drive it with a higher current,…………… continues on U of M News Service

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