Blu-ray disc with Jackie Chan increase the efficiency of solar panels by 22% Bashny.Net

Old Blu-ray discs to good use. In the journal Nature Communications on November 25 published article describing the method how to use these drives to increase the efficiency of solar cells.

"The film" Police Story 3: Super Cop "with Jackie Chan came to us by chance - said an American engineer Jiaxing Huang (Jiaxing Huang) from Northwestern University, one of the authors of scientific work. - My student found him among several other films with BestBuy. Of course, fit and CDs with other films ».

The fact that the individual solar cells convert light into electricity is slightly better than the other, more absorbing photons into a wide spectral range. This is due to the pseudo-random patterns in the texture of the surface of the "super-efficient" cells, as compared with completely random patterns in other cells (the cells with random patterns are better than photocells periodic clear texture). A surface of the Blu-ray disc consists of just such pseudo relevant projections and recesses, in which encoded video and audio. This is associated with an encoding algorithm drives Blu-ray, which adds a random signal coded redundant coding, but also limits the number of consecutive 0 or 1. Since the random sequence is transformed into a pseudo-random. By coincidence, the size of the recesses and protrusions on the surface of the Blu-ray from 150 to 525 nm is almost ideal for solar cells.



Jiaxing Huang and his students found a way to transfer the pattern from the Blu-ray disc on the surface of the element, turning an ordinary cell in the "ultra-efficient».

Technique provides for the manufacture of rubber stamps that copy on the disc surface Blu-ray, then they are treated surface of solar cells.



Experiments with disks lasted several months. The authors believe that the result obtained is quite unexpected (ie very good): as much as 21, 8%. Probably, the technique can be improved by using thicker solar cells or other types of materials. To optimize the process of imprinting on the rubber. In these cases the efficiency of solar cell will be raised to an even greater value!

It is even possible that the plants producing Blu-ray Disc ever re-classified on solar energy. How many of your discs Blu-ray?

0-10

11-100

More than 100 < /

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