New techniques in making a sprayable liquid that works like a solar panel will make them both easier to install and cheaper to produce.  The new method is currently in development at a lab at the University of Sheffield in the United Kingdom. “The goal is to reduce the amount of energy and money required to make a solar cell,” David Lidzey, a physicist collaborating on the project, explains in a statement. “This means that we need solar cell materials that have low embodied energy but we also need manufacturing processes that are efficient, reliable and consume less energy.”

More details can be found here: http://www.fastcoexist.com/1681384/you-may-soon-just-spray-paint-on-your-solar-panels