By Prachi Patel, Technology Review
Cost has been a major barrier in keeping people from buying energy-efficient LED lightbulbs. While they last much longer than $1 incandescent bulbs or $4 compact fluorescents, their sticker-price is daunting: a 60-watt equivalent LED bulb costs $15 to $25. Now one of the world’s largest LED makers, Osram Opto Semiconductors, says it has perfected a technique that could significantly cut the production cost of LEDs.
http://www.technologyreview.com/news/428102/cheaper-led-lightbulbs-are-on-the-way/
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