Solar cells soon could be painted onto the sides of buildings or rooftops with nanoparticle inks, according to one chemical engineer. The new nano-ink process could replace the standard method of manufacturing solar cells, which requires high temperatures and is relatively expensive, said Brian Korgel of the University of Texas at Austin. "We make a solution of these nanocrystals, and we spray paint them onto a substrate," said Matthew Panthani, a doctoral student and graduate research assistant in Korgel's lab. -Live Science
