news digest ♦ compound semiconductor
heat pad allows arrays to be connected on a common heat sink, thus simplifying thermal design and is also lead-free and RoHS compliant.
Target and GE join forces to produce LED refrigerated display cases
2010-04-14
Energy usage will be cut by 60% compared to fluorescent systems
In its bid to revolutionize the environmental impacts and energy usage of its products, Minneapolis-based Target Corporation will install over 55,000 doors incorporating GE high-performance LED units.
The freezer and cooler door cases will be installed in 500 stores nationwide.
“Target strives to be a responsible steward of the environment,” remarks Target Vice President Tony Heredia. “We continue to find ways we can increase energy efficiency and pilot new technologies. Efforts like these, which help reduce one of our largest operating expenses, also curtail our impact on the environment.”
Having already converted 150 stores in 2009, Target intends to convert an additional 350 stores in 2010. The GE LED systems will be used in new and remodeled stores going forward.
GE has sold more than 700,000 LED refrigerated display case lights since their invention in 2006. Forty of the top 50 U.S. grocers and supermarkets are using the solutions, as well as 19 of the top 25 convenience store chains.
“Through this conversion to reliable GE- quality LED systems and through additional initiatives that we’re helping to execute, Target is making great strides both operationally
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www.compoundsemiconductor.net April/May 2010
and environmentally,” says Michael Petras, president and CEO of GE Lighting.
The LED system operates at 29 watts per door, compared with an average of 73 watts with the existing fluorescent lamps, and Target will see additional savings due to the integration of motion-activated occupancy sensors for the majority of the display cases.
Cambrios and Ascent Announce collaboration on Solar Power
2010-04-13
Research targeted at applications of CIGS solar cells to U.S. military applications
Ascent Solar Technologies is a developer of flexible thin-film photovoltaic modules while Cambrios uses nanotechnology to simplify electronic materials manufacturing processes and improve end-product performance. Ascent says it will investigate whether its Copper-Indium-Gallium-Selenium (CIGS) photovoltaics thin-film solar modules can be used with Cambrios’ ClearOhm coatings. ClearOhm films produce a transparent, conductive film by wet processing are alleged to have improved properties by comparison to traditional transparent conductive oxides.
Although CIGS solar cells are not as efficient as crystalline silicon solar cells they are expected to be substantially cheaper due to the much lower material cost and potentially lower fabrication cost.
Another advantage of CIGS over crystalline silicon is that they have a direct bandgap and thus require much thinner layers to absorb the same amount of light.
“Ascent Solar has very high efficiency CIGS solar cells so they are the perfect partner for this program,” Cambrios Chief Executive Officer Michael Knapp said in a statement.
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