Born-again solar cells are more efficient

 作者:庾抱     |      日期:2017-10-22 04:01:00
FOR better solar cells, look no further than the regeneration skills of plants. Plants counteract the damaging effects of the sun by constantly rebuilding their photosynthetic parts. To mimic this, a team led by Michael Strano at the Massachusetts Institute of Technology created a solar cell using light-harvesting proteins, lipids and carbon nanotubes. These stick together and the nanotubes channel electrons generated by the proteins to an external circuit. When a surfactant is added, these components break apart, reassembling only once it is removed. By repeating this process every 32 hours, the team found that after a week,