New Technique Improves Stability, Efficiency of Solar Cell Modules Written by AZoMJan 28 2021 A group of scientists from the Okinawa Institute of Science and Technology Graduate University (OIST) has used a new fabrication method to create perovskite solar modules that have enhanced efficiency and stability with fewer defects. Perovskite solar cell devices require multiple layers to function. The active perovskite layer absorbs sunlight and generates charge carriers. The transport layers transport the charge carriers to the electrodes, releasing a current. The active perovskite layer is formed from many crystal grains. The boundaries between these grains, and other defects in the perovskite film, such as pinholes, lower the efficiency and lifespan of the solar devices. Image Credit: Okinawa Institute of Science and Technology Graduate University.