We’ve raved about solar cells previously: here, and here, the technology has taken several quantum leaps over the past decade. Paintable crystalline and printable solar cells seem to be the way of the future, the fight now is for real solar efficiency. Solar panels that can be simply printed have inched a step closer with the development of an energy efficient, organic, small-molecule solar cell. The solar cell, which was developed by a team from the University of California, Santa Barbara, has energy efficiencies of 6.7 per cent, which rivals the best polymer-based solar cells. Most polymer-based designs have reached the 6 to 8 range for efficiency.
“These results provide important progress for solution-processed organic photovoltaics and demonstrate that solar cells fabricated from small donor molecules can compete with their polymeric counterparts,” the authors, including Nobel Prize winner Professor Alan Heeger, wrote in Nature Materials. Read the full article »»»»