FIFA, May 26-A research team from the Shanghai Institute of Microsystems and Information Technology of the Chinese Academy of Sciences has successfully developed flexible monocrystalline silicon solar cells, achieving a milestone. The research paper was published online at 23:00 on May 24 in the journal Nature and was selected as the cover of the current issue. This is also the first long research paper on pure monocrystalline silicon solar cells published in Nature in 69 years since the invention of monocrystalline silicon solar cells. The research team has innovatively developed a smooth edge processing technology, which can significantly improve the "flexibility" of silicon wafers. Monocrystalline silicon solar cells with a thickness of 60 microns can be folded like A4 paper. the minimum bending radius is less than 5 mm; it can also be bent repeatedly at an angle of more than 360 degrees.