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Chinese scientists have recently worked out flexible solar cells that can be folded thousands of times. China's researchers to take the edge of the rounded processing technology, based on the technology developed by the flexible monocrystalline silicon solar cells, as thin as paper, thickness of 60 microns, and can be bent and folded like paper, the relevant research results were published online on May 24 in the journal "Nature", and was selected as the cover article.
Monocrystalline silicon solar cells is currently the fastest development of a solar cell, with a long service life, the preparation process is perfect as well as the advantages of high conversion efficiency, is the dominant product in the photovoltaic market.
Silicon wafers are brittle materials and are easily broken. Like people tear a piece of paper or break a thing, usually from the edge of the broken, solar cells are the same. Because the solar cell will be done on the surface treatment, made of uneven structure, can better absorb sunlight, usually called "pyramid structure". Observed by high-speed camera, monocrystalline silicon solar cells in the bending of the fracture, always from the edge of the monocrystalline silicon "V" groove began to sprout cracks, this area is also defined as the wafer's "mechanics of the short plate".
Researchers to take the edge of the rounded processing technology, the edge of the very sharp "V" groove processing into a rounded, grinding it into a "U" shape, professionally known as the "mesoscopic structure of the symmetry of the processing "After this treatment, the panel will not be easy to break.
Flexible solar cells in mobile communications, automotive mobile power, aerospace and many other fields have a wide range of applications, thin, portable, bendable, but also does not reduce the conversion efficiency, the development of flexible monocrystalline silicon solar cells, not only able to reduce the cost of production of solar cells, but also for the solar photovoltaic application scenarios to open up a new world.
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