Loading video... VIDEO: Scientists from the OIST Energy Materials and Surface Sciences Unit show off the perovskite solar modules in action, powering a fan and toy car. view more Credit: OIST Perovskites are projected to be a game-changer in future solar technology but currently suffer from a short operational lifespan and drops in efficiency when scaled up to a larger size Scientists have improved the stability and efficiency of solar cell modules by mixing the precursor materials with ammonium chloride during fabrication The perovskite active layer in the improved solar modules are thicker and have larger grains, with fewer defects