Rockstar

Cheap Lighting for Off-Grid African Villages

By: Katie Cordrey - Published: • References: popsci & spectrum.ieee.org
Danish researcher Frederik Krebs has created an LED lamp that may bring cheap lighting to millions who now rely on kerosene lanterns as their primary source of evening light. The lamp combines photovoltaic cells printed on sheets with LEDs and ultra-thin lithium batteries and will cost about $7 to produce.

The lamps are left rolled out flat during the day for charging and rolled and button snapped into a cone-shaped light-emitting cone at night.

Prototype tests are being conducted in Zambia. Improvements to the design are an expected outcome: The current lamp design is only 1% efficient and is projected to last about a year. Stats for Printed Solar LEDs Trending: Older & Mild
Traction: 4,792 clicks in 254 w
Interest: 4 minutes
Concept: Printed Solar LEDs
Related: 33 examples / 25 photos
Segment: Neutral, 18-35
Comparison Set: 12 similar articles, including: led lights to be the new incandescent, green technology breakthrough, and solar paint.