Interview: Solar Energy Research
Wei Wang sat down in his lab at Oregon State University with an inkjet printer and an interesting question. Why can’t solar cells be made simply by printing them with an inkjet printer filled with a solution of solar-transmitting compound? His answer was the subject of a four-page research paper published in the industry journal Solar Energy Materials & Solar Cells and the focus of an article from the BBC. The 28-year-old Ph.D. candidate from Shanxi Province, China had discovered an easy process for making solar cells with a printer, a substrate and a combination of metal salts called CIGS. Wang’s discovery could revolutionize the solar industry as a cheap and environmentally friendly alternative to the traditional siliconbased solar cell, and, as a by-product, bring inkjets back into the avant garde.