Connect with us

Hi, what are you looking for?

CleanTechnica

LED

New $3 LED Bulb Lasts 60 Years

The battle between CFL and LED bulbs may finally be over thanks to researchers at Cambridge University who have developed a $3 LED bulb that lasts for 60 years. The bulb, which is smaller than a penny, is 12 times more efficient than tungsten bulbs and three times more efficient than fluorescent bulbs.

Cambridge’s new 100,000 hour, mercury-free LED bulb uses a man-made semiconductor called gallium nitride that is grown on a cheap silicon wafer. Previously, gallium nitride has only been grown on pricey sapphire wafers.

According to researchers working on the project, the first low-cost LED bulbs could be in stores as early as 2011.

Photo Credit: Graham Turner

 
Appreciate CleanTechnica’s originality and cleantech news coverage? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
 

Don't want to miss a cleantech story? Sign up for daily news updates from CleanTechnica on email. Or follow us on Google News!
 

Have a tip for CleanTechnica, want to advertise, or want to suggest a guest for our CleanTech Talk podcast? Contact us here.
Advertisement
 
Written By

was formerly the editor of CleanTechnica and is a senior editor at Co.Exist. She has contributed to SF Weekly, Popular Science, Inhabitat, Greenbiz, NBC Bay Area, GOOD Magazine, and more. A graduate of Vassar College, she has previously worked in publishing, organic farming, documentary film, and newspaper journalism. Her interests include permaculture, hiking, skiing, music, relocalization, and cob (the building material). She currently resides in San Francisco, CA.

Comments

You May Also Like

Air Quality

Local leaders weigh in on a lawsuit to stop the Trump administration from weakening regulations on power plants.

Climate Change

The latest US midterm is over — or nearly over — and Democratic candidates had a record wave of support from voters, but there's...

Climate Change

The permafrost soils of the Arctic and near-Arctic regions store more mercury than all of the rest of the world's soils, the oceans, and...

Batteries

For several years now, there have been increasing complaints from utilities about the resulting load shape from owners with solar systems. This is the...

Copyright © 2021 CleanTechnica. The content produced by this site is for entertainment purposes only. Opinions and comments published on this site may not be sanctioned by and do not necessarily represent the views of CleanTechnica, its owners, sponsors, affiliates, or subsidiaries.