Lowell, Massachusetts Mayor John Leahy has demanded the resignation of School Committee member Robert Hoey Jr. after Hoey appeared on a live Cable TV program on Wednesday morning, Feb. 24, and referred to a former administrator at the Lowell Public Schools as a “kike.”
Committee member calls former employee kike on TV – The Forward forward.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from forward.com Daily Mail and Mail on Sunday newspapers.
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Perovskites are a leading candidate for eventually replacing silicon as the material of choice for solar panels. They offer the potential for low-cost, low-temperature manufacturing of ultrathin, lightweight flexible cells, but so far their efficiency at converting sunlight to electricity has lagged behind that of silicon and some other alternatives.
Now, a new approach to the design of perovskite cells has pushed the material to match or exceed the efficiency of today’s typical silicon cell, which generally ranges from 20 to 22 percent, laying the groundwork for further improvements.
By adding a specially treated conductive layer of tin dioxide bonded to the perovskite material, which provides an improved path for the charge carriers in the cell, and by modifying the perovskite formula, researchers have boosted its overall efficiency as a solar cell to 25.2 percent a near-record for such materials,
Researchers improve efficiency of next-generation solar cell material scienceblog.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from scienceblog.com Daily Mail and Mail on Sunday newspapers.