It’s been nearly two years since U.S. manufacturers stopped making conventional 40- and 60-watt incandescent lightbulbs. While you can still find a few on store shelves, the familiar incandescent ...
MUNICH, Germany — The Dresden technical university and OLED vendor Novaled AG (Dresden, Germany) claim they have reached an efficiency of 90 lumen per watt. Now researchers have to overcome only ...
Solid-state lighting (SSL) technology has great promise for significant gains in energy efficiency and huge overall energy savings. According to a 2005 study titled Energy Efficient Lighting ...
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