SSS 2010-02-15
时间：2019-01-08 作者：英语课 分类：Scientific American(二)月
Imagine a world where sunlight can be captured to produce electricity anywhere, on any surface. The makers 1 of thin-film flexible solar cells imagine that world too. But a big problem has been the amount of silicon 2 needed to harvest a little sunshine.
Now, researchers at Caltech say they’ve designed a device that gets comparable solar absorption while using just one percent of the silicon per unit area that current solar cells need. The work was published in the journal Nature Materials.
The research team tried silicon wire arrays instead of traditional silicon panels. These wires have been shown to do a good job converting sunlight to usable energy on the nanoscale. But the scientists had to create wires a thousand times longer.
Light bounces around within the wires and is eventually absorbed when it hits at the correct angle. But there was a problem: too much light was leaking out. Adding nanoparticles of alumina kept much more of the light scattering 3 until it got absorbed. The result is a system that virtually matches silicon wafer light absorption and may be more efficient at converting light to electricity, while using a tiny fraction of the material.
- The makers of the product assured us that there had been no sacrifice of quality. 这一产品的制造商向我们保证说他们没有牺牲质量。
- The makers are about to launch out a new product. 制造商们马上要生产一种新产品。 来自《简明英汉词典》
- This company pioneered the use of silicon chip.这家公司开创了使用硅片的方法。
- A chip is a piece of silicon about the size of a postage stamp.芯片就是一枚邮票大小的硅片。
- The child felle into a rage and began scattering its toys about. 这孩子突发狂怒，把玩具扔得满地都是。 来自《简明英汉词典》
- The farmers are scattering seed. 农夫们在播种。 来自《简明英汉词典》