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Quote of the day

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

 

Carl Sagan

Nanowires could be solution for high performance solar cells

RATE THIS! +1
Posted in Science on 9th Nov, 2011 06:31 PM by APM

The research group, led by electrical and computer engineering professor Xiuling Li, developed a technique to integrate compound semiconductor nanowires on , overcoming key challenges in device production. The team published its results in the journal .

 

Semiconductors in the III-V (pronounced three-five) group are promising for devices that change light to electricity and vice-versa, such as high-end or lasers. However, they don't integrate with seamlessly, which is a problem since silicon is the most ubiquitous . Each material has a specific distance between the atoms in the crystal, known as the lattice constant.

 

"The biggest challenge has been that III-V semiconductors and silicon do not have the same lattice constants," Li said. "They cannot be stacked on top of each other in a straightforward way without generating dislocations, which can be thought of as atomic scale cracks."



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