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Sun Catcher Promises Cheaper Solar Power

机译:Sun Catcher承诺提供更便宜的太阳能

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The most abundant energy source in the world is sunlight, but engineers have had trouble using it to generate clean electricity because the silicon in solar cells is so costly. In September, engineers at MIT announced a new strategy that could bring down the high cost of harvesting sunlight. Using technology borrowed from lasers, they have developed a low-cost solar concentrator that collects sunlight from a large area and focuses it onto a much smaller area, boosting the efficiency of existing solar cells by 15 to 20 percent. The concentrator prototypes look like square, brightly dyed panes of glass. When sunlight hits the concentrator, dye molecules applied to the glass redirect most wavelengths to the edges of the glass, similar to the way a fiber-optic cable carries light. Solar cells mounted on the edges of the concentrator then capture the light and convert it to electricity. Any light that passes through the glass is picked up by another solar cell.
机译:世界上最丰富的能源是阳光,但是工程师很难用它来产生清洁的电能,因为太阳能电池中的硅非常昂贵。九月份,麻省理工学院的工程师宣布了一项新的战略,可以降低收割阳光的高昂成本。他们利用从激光中借来的技术,开发出了一种低成本的太阳能集中器,可以将大面积的太阳光收集起来并将其聚焦到更小的区域,从而使现有太阳能电池的效率提高15%到20%。选矿厂的原型看起来像是方形的,染色鲜艳的玻璃板。当阳光照射到聚光器上时,施加到玻璃上的染料分子会将大多数波长重定向到玻璃的边缘,这类似于光纤电缆传输光的方式。然后,将太阳能电池安装在集中器边缘上,然后捕获光并将其转换为电能。穿过玻璃的任何光都会被另一个太阳能电池吸收。

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