By Betty Coffman A University of Louisville student-led startup has won $200,000 in a prestigious U.S. Department of Energy competition focused on next-generation energy technologies and now will compete for an additional $500,000. SoFab Inks LLC was founded by UofL graduate students Blake Martin, Peter Armstrong and Sashil Chapagain, who won DOE’s American-Made Perovskite Startup Prize for...