China’s Solar Dominance Faces New Rival: An Ultrathin Film

TOKYO—China’s near-monopoly on the solar-energy market has prompted the U.S. and allies to step up the seek for workarounds. Engineers consider they’ve discovered one in a sort of photo voltaic cell that appears and looks like digital camera movie.

Japan is pushing the expertise with subsidies and different help, an indication of how renewable power, alongside different high-tech fields comparable to semiconductors, has turn out to be a geopolitical soccer.