When 1 + 1 Doesn't Equal 2: Making Rival Molecules Work Together in Perovskite Solar Cells
Put a Lewis acid (an electron acceptor) and a Lewis base (an electron donor) together and they lock onto each other, so 1 + 1 falls short of 2. In our perovskite solar cells, we found two molecules that ignore each other yet each passivates its own type of defect for efficient, durable devices.